diff options
40 files changed, 406 insertions, 371 deletions
diff --git a/mysql-test/r/derived_view.result b/mysql-test/r/derived_view.result index a109aa3198b..cee19237230 100644 --- a/mysql-test/r/derived_view.result +++ b/mysql-test/r/derived_view.result @@ -1592,6 +1592,7 @@ CREATE TABLE t3 ( b int NOT NULL, e varchar(1) NOT NULL, d varchar(1) NOT NULL, KEY (e,b) ); INSERT INTO t3 VALUES (4,'x','x'),(9,'w','w'),(4,'d','d'),(8,'e','e'); +INSERT INTO t3 VALUES (14,'a','a'),(19,'b','b'),(14,'c','c'),(18,'d','d'); CREATE TABLE t4 (i int NOT NULL, m varchar(1) NOT NULL) ; INSERT INTO t4 VALUES (8,'m'),(9,'d'),(2,'s'),(4,'r'),(8,'m'); CREATE TABLE t5 ( @@ -1607,30 +1608,36 @@ SET SESSION join_buffer_size = 512; EXPLAIN SELECT t2.d FROM t1,t2,v3 WHERE v3.e = t2.d AND v3.i < 3; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ALL NULL NULL NULL NULL 3 -1 SIMPLE t3 ref e e 3 test.t2.d 1 Using index -1 SIMPLE t5 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) +1 SIMPLE t5 ALL NULL NULL NULL NULL 2 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using join buffer (flat, BNL join) +1 SIMPLE t3 ref e e 3 test.t2.d 1 Using index 1 SIMPLE t4 ALL NULL NULL NULL NULL 5 Using where; Using join buffer (flat, BNL join) SELECT t2.d FROM t1,t2,v3 WHERE v3.e = t2.d AND v3.i < 3; d w -d -e w -d -e w -d -e w -d -e w -d -e w d +d +d +d +d +d +d +d +d +d +d +d +e +e +e +e +e e SET SESSION join_cache_level = DEFAULT; SET SESSION join_buffer_size = DEFAULT; diff --git a/mysql-test/r/explain.result b/mysql-test/r/explain.result index 52c58f088a1..e08e3e22307 100644 --- a/mysql-test/r/explain.result +++ b/mysql-test/r/explain.result @@ -196,13 +196,13 @@ create table t2 (dt datetime not null); insert into t1 values ('2001-01-01 1:1:1', '1:1:1'), ('2001-01-01 1:1:1', '1:1:1'); insert into t2 values ('2001-01-01 1:1:1'), ('2001-01-01 1:1:1'); -SET @save_optimizer_switch=@@optimizer_switch; -SET optimizer_switch='semijoin_with_cache=off'; +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; flush tables; EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN (SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.dt IS NULL ); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where -1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; Start temporary; End temporary +1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; FirstMatch(OUTR) flush tables; SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN (SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.dt IS NULL ); dt @@ -210,13 +210,13 @@ flush tables; EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' ); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY OUTR ALL NULL NULL NULL NULL 2 Using where -1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; Start temporary; End temporary +1 PRIMARY INNR ALL NULL NULL NULL NULL 2 Using where; FirstMatch(OUTR) flush tables; SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' ); dt 2001-01-01 01:01:01 2001-01-01 01:01:01 -SET optimizer_switch=@save_optimizer_switch; +SET join_cache_level=@save_join_cache_level; drop tables t1, t2; # # Bug#47669: Query showed by EXPLAIN EXTENDED gives different result from original query diff --git a/mysql-test/r/greedy_optimizer.result b/mysql-test/r/greedy_optimizer.result index b4c3f4ec9e0..65ec63e2cd9 100644 --- a/mysql-test/r/greedy_optimizer.result +++ b/mysql-test/r/greedy_optimizer.result @@ -202,28 +202,28 @@ select @@optimizer_search_depth; 0 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1371.437037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1371.437037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -231,11 +231,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -243,11 +243,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -255,11 +255,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -267,11 +267,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 set optimizer_search_depth=1; select @@optimizer_search_depth; @@optimizer_search_depth @@ -287,7 +287,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -299,7 +299,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -311,7 +311,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -323,7 +323,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -335,7 +335,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -347,35 +347,35 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 set optimizer_search_depth=62; select @@optimizer_search_depth; @@optimizer_search_depth 62 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1371.437037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1371.437037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -383,11 +383,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -395,11 +395,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -407,11 +407,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -419,11 +419,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 289.418727 +Last_query_cost 362.618727 set optimizer_prune_level=1; select @@optimizer_prune_level; @@optimizer_prune_level @@ -443,7 +443,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -455,55 +455,55 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 set optimizer_search_depth=1; select @@optimizer_search_depth; @@optimizer_search_depth @@ -519,7 +519,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -531,7 +531,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -543,7 +543,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -555,7 +555,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -567,7 +567,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -579,7 +579,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 set optimizer_search_depth=62; select @@optimizer_search_depth; @@optimizer_search_depth @@ -595,7 +595,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -607,55 +607,55 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 821.837037 +Last_query_cost 1693.637037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 794.837037 +Last_query_cost 844.037037 drop table t1,t2,t3,t4,t5,t6,t7; CREATE TABLE t1 (a int, b int, d int, i int); INSERT INTO t1 VALUES (1,1,1,1); diff --git a/mysql-test/r/innodb_icp.result b/mysql-test/r/innodb_icp.result index 5046b7b4b8b..08238289330 100644 --- a/mysql-test/r/innodb_icp.result +++ b/mysql-test/r/innodb_icp.result @@ -431,8 +431,8 @@ SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON it.i=it.i WHERE it.pk-t1.i<10); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where -2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index 2 DEPENDENT SUBQUERY it eq_ref PRIMARY PRIMARY 4 func 1 Using index condition +2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using where; Using index; Using join buffer (flat, BNL join) SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON it.i=it.i WHERE it.pk-t1.i<10); pk i diff --git a/mysql-test/r/join.result b/mysql-test/r/join.result index 4496bcf36d2..8a8b9a690a9 100644 --- a/mysql-test/r/join.result +++ b/mysql-test/r/join.result @@ -897,7 +897,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE B eq_ref PRIMARY PRIMARY 4 test.A.b 1 show status like '%cost%'; Variable_name Value -Last_query_cost 24.016090 +Last_query_cost 28.016090 select '^^: The above should be ~= 20 + cost(select * from t1). Value less than 20 is an error' Z; Z ^^: The above should be ~= 20 + cost(select * from t1). Value less than 20 is an error diff --git a/mysql-test/r/join_cache.result b/mysql-test/r/join_cache.result index f4c995ab1ac..2fc8cc83821 100644 --- a/mysql-test/r/join_cache.result +++ b/mysql-test/r/join_cache.result @@ -314,8 +314,8 @@ CountryLanguage.Percentage > 50 AND LENGTH(Language) < LENGTH(City.Name) - 2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE Country ALL NULL NULL NULL NULL 239 Using where -1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (flat, BNLH join) -1 SIMPLE CountryLanguage hash_ALL NULL #hash#$hj 3 world.Country.Code 984 Using where; Using join buffer (incremental, BNLH join) +1 SIMPLE CountryLanguage hash_ALL NULL #hash#$hj 3 world.Country.Code 984 Using where; Using join buffer (flat, BNLH join) +1 SIMPLE City hash_ALL NULL #hash#$hj 3 world.Country.Code 4079 Using where; Using join buffer (incremental, BNLH join) SELECT City.Name, Country.Name, CountryLanguage.Language FROM City,Country,CountryLanguage WHERE City.Country=Country.Code AND @@ -3927,8 +3927,8 @@ EXPLAIN SELECT t3.a FROM t1,t2,t3 WHERE t1.a = t3.a AND t1.b = t3.b; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (incremental, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.a 1 Using where; Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 Using join buffer (incremental, BNL join) SELECT t3.a FROM t1,t2,t3 WHERE t1.a = t3.a AND t1.b = t3.b; a 27 @@ -4410,8 +4410,8 @@ SET SESSION join_buffer_size = 192; EXPLAIN SELECT t1.a, t2.c FROM t1,t2 WHERE t1.a=t2.a AND t2.b=99; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 36 Using where -1 SIMPLE t2 hash_ALL idx #hash#idx 10 test.t1.a,const 30 Using join buffer (flat, BNLH join) +1 SIMPLE t2 ALL idx NULL NULL NULL 30 Using where +1 SIMPLE t1 hash_ALL NULL #hash#$hj 5 test.t2.a 36 Using where; Using join buffer (flat, BNLH join) SELECT t1.a, t2.c FROM t1,t2 WHERE t1.a=t2.a AND t2.b=99; a c SET SESSION join_cache_level = DEFAULT; diff --git a/mysql-test/r/maria_icp.result b/mysql-test/r/maria_icp.result index c0275d41d43..2d2b4d0c1f7 100644 --- a/mysql-test/r/maria_icp.result +++ b/mysql-test/r/maria_icp.result @@ -437,8 +437,8 @@ SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON it.i=it.i WHERE it.pk-t1.i<10); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where -2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index 2 DEPENDENT SUBQUERY it eq_ref PRIMARY PRIMARY 4 func 1 Using index condition +2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using where; Using index; Using join buffer (flat, BNL join) SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON it.i=it.i WHERE it.pk-t1.i<10); pk i diff --git a/mysql-test/r/myisam_icp.result b/mysql-test/r/myisam_icp.result index 68d0ce4e381..c480e35df42 100644 --- a/mysql-test/r/myisam_icp.result +++ b/mysql-test/r/myisam_icp.result @@ -435,8 +435,8 @@ SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON it.i=it.i WHERE it.pk-t1.i<10); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where -2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index 2 DEPENDENT SUBQUERY it eq_ref PRIMARY PRIMARY 4 func 1 Using index condition +2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using where; Using index; Using join buffer (flat, BNL join) SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON it.i=it.i WHERE it.pk-t1.i<10); pk i diff --git a/mysql-test/r/select.result b/mysql-test/r/select.result index 29a6bb4bf35..fc0f7283981 100644 --- a/mysql-test/r/select.result +++ b/mysql-test/r/select.result @@ -2199,10 +2199,10 @@ a a select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 on t1.a>1; a a 1 2 -2 2 -3 2 1 3 +2 2 2 3 +3 2 3 3 select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1; a a diff --git a/mysql-test/r/select_jcl6.result b/mysql-test/r/select_jcl6.result index fd23d6cc2d6..2d3add1b922 100644 --- a/mysql-test/r/select_jcl6.result +++ b/mysql-test/r/select_jcl6.result @@ -2210,10 +2210,10 @@ a a select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 on t1.a>1; a a 1 2 -2 2 -3 2 1 3 +2 2 2 3 +3 2 3 3 select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1; a a diff --git a/mysql-test/r/select_pkeycache.result b/mysql-test/r/select_pkeycache.result index 29a6bb4bf35..fc0f7283981 100644 --- a/mysql-test/r/select_pkeycache.result +++ b/mysql-test/r/select_pkeycache.result @@ -2199,10 +2199,10 @@ a a select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 on t1.a>1; a a 1 2 -2 2 -3 2 1 3 +2 2 2 3 +3 2 3 3 select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1; a a diff --git a/mysql-test/r/status.result b/mysql-test/r/status.result index 2c88345646c..5579728e0b2 100644 --- a/mysql-test/r/status.result +++ b/mysql-test/r/status.result @@ -149,7 +149,7 @@ a a 1 1 SHOW SESSION STATUS LIKE 'Last_query_cost'; Variable_name Value -Last_query_cost 4.805836 +Last_query_cost 5.205836 DROP TABLE t1; show status like 'com_show_status'; Variable_name Value diff --git a/mysql-test/r/subselect.result b/mysql-test/r/subselect.result index f54106b5fa0..95fc6e03e56 100644 --- a/mysql-test/r/subselect.result +++ b/mysql-test/r/subselect.result @@ -4336,6 +4336,9 @@ LEFT(t1.a1,1) SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); a2 DROP TABLE t1, t2, t3; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -4367,6 +4370,7 @@ id select_type table type possible_keys key key_len ref rows Extra SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); a b DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); EXPLAIN @@ -4463,20 +4467,23 @@ a drop table t1, t2; CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 1 PRIMARY <subquery2> const distinct_key distinct_key 5 const 1 100.00 +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary Warnings: Note 1003 select 1 AS `1` from <materialize> (select min(`test`.`t1`.`a`) from `test`.`t1` group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`min(a)` = 1) EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 WHERE a > 3 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 1 PRIMARY <subquery2> const distinct_key distinct_key 5 const 1 100.00 +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary Warnings: Note 1003 select 1 AS `1` from <materialize> (select min(`test`.`t1`.`a`) from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`min(a)` = 1) +SET join_cache_level=@save_join_cache_level; DROP TABLE t1; # # Bug#45061: Incorrectly market field caused wrong result. @@ -5227,16 +5234,19 @@ CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); INSERT INTO t2 VALUES (11,1); INSERT INTO t2 VALUES (12,2); INSERT INTO t2 VALUES (15,4); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 3 1 PRIMARY it eq_ref PRIMARY PRIMARY 4 test.t1.pk 1 Using index -1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(it); Using join buffer (flat, BNL join) +1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(it) SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); pk i 11 0 12 5 15 0 +SET join_cache_level=@save_join_cache_level; DROP table t1,t2; # # Bug#751350: crash with pushed condition for outer references when diff --git a/mysql-test/r/subselect2.result b/mysql-test/r/subselect2.result index 52297a65e39..41c445329cb 100644 --- a/mysql-test/r/subselect2.result +++ b/mysql-test/r/subselect2.result @@ -125,9 +125,9 @@ DOCID DOCNAME DOCTYPEID FOLDERID AUTHOR CREATED TITLE SUBTITLE DOCABSTRACT PUBLI c373e9f5ad07993f3859444553544200 Last Discussion c373e9f5ad079174ff17444553544200 c373e9f5ad0796c0eca4444553544200 Goldilocks 2003-06-09 11:21:06 Title: Last Discussion NULL Setting new abstract and keeping doc checked out 2003-06-09 10:51:26 2003-06-09 10:51:26 NULL NULL NULL 03eea05112b845949f3fd03278b5fe43 2003-06-09 11:21:06 admin 0 NULL Discussion NULL NULL EXPLAIN SELECT t2.*, t4.DOCTYPENAME, t1.CONTENTSIZE,t1.MIMETYPE FROM t2 INNER JOIN t4 ON t2.DOCTYPEID = t4.DOCTYPEID LEFT OUTER JOIN t1 ON t2.DOCID = t1.DOCID WHERE t2.FOLDERID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID IN(SELECT t3.FOLDERID FROM t3 WHERE t3.PARENTID='2f6161e879db43c1a5b82c21ddc49089' AND t3.FOLDERNAME = 'Level1') AND t3.FOLDERNAME = 'Level2') AND t3.FOLDERNAME = 'Level3') AND t3.FOLDERNAME = 'CopiedFolder') AND t3.FOLDERNAME = 'Movie Reviews') AND t2.DOCNAME = 'Last Discussion'; id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t4 ALL PRIMARY NULL NULL NULL 10 -1 PRIMARY t2 ALL DDOCTYPEID_IDX,DFOLDERID_IDX NULL NULL NULL 9 Using where; Using join buffer (flat, BNL join) +1 PRIMARY t2 ALL DDOCTYPEID_IDX,DFOLDERID_IDX NULL NULL NULL 9 Using where 1 PRIMARY t1 eq_ref PRIMARY PRIMARY 34 test.t2.DOCID 1 +1 PRIMARY t4 eq_ref PRIMARY PRIMARY 34 test.t2.DOCTYPEID 1 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t2.FOLDERID 1 Using where 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where 1 PRIMARY t3 eq_ref PRIMARY,FFOLDERID_IDX,CMFLDRPARNT_IDX PRIMARY 34 test.t3.PARENTID 1 Using where diff --git a/mysql-test/r/subselect3.result b/mysql-test/r/subselect3.result index 29518fb6df9..ae629ccb928 100644 --- a/mysql-test/r/subselect3.result +++ b/mysql-test/r/subselect3.result @@ -1138,8 +1138,8 @@ create table t3 (a int); insert into t3 select A.a + 10*B.a from t0 A, t0 B; explain select * from t3 where a in (select kp1 from t1 where kp1<20); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t3 ALL NULL NULL NULL NULL 100 Using where -1 PRIMARY t1 ref kp1 kp1 5 test.t3.a 1 Using index; FirstMatch(t3) +1 PRIMARY t1 range kp1 kp1 5 NULL 48 Using where; Using index; LooseScan +1 PRIMARY t3 ALL NULL NULL NULL NULL 100 Using where; Using join buffer (flat, BNL join) create table t4 (pk int primary key); insert into t4 select a from t3; explain select * from t3 where a in (select t1.kp1 from t1,t4 where kp1<20 @@ -1336,9 +1336,9 @@ insert into t2 select * from t2; explain select * from t1 where (a,b,c) in (select X.a, Y.a, Z.a from t2 X, t2 Y, t2 Z where X.b=33); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 -1 PRIMARY X ALL NULL NULL NULL NULL 6 Using where; Start temporary; Using join buffer (flat, BNL join) -1 PRIMARY Y ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 PRIMARY Z ALL NULL NULL NULL NULL 6 Using where; End temporary; Using join buffer (flat, BNL join) +1 PRIMARY X ALL NULL NULL NULL NULL 6 Using where +1 PRIMARY Y ALL NULL NULL NULL NULL 6 Using where +1 PRIMARY Z ALL NULL NULL NULL NULL 6 Using where; FirstMatch(t1) drop table t0,t1,t2; set @@optimizer_switch=@save_optimizer_switch; diff --git a/mysql-test/r/subselect3_jcl6.result b/mysql-test/r/subselect3_jcl6.result index c70adc7e71c..7d20f81fbb9 100644 --- a/mysql-test/r/subselect3_jcl6.result +++ b/mysql-test/r/subselect3_jcl6.result @@ -1148,8 +1148,8 @@ create table t3 (a int); insert into t3 select A.a + 10*B.a from t0 A, t0 B; explain select * from t3 where a in (select kp1 from t1 where kp1<20); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t3 ALL NULL NULL NULL NULL 100 Using where -1 PRIMARY t1 ref kp1 kp1 5 test.t3.a 1 Using index; FirstMatch(t3) +1 PRIMARY t1 range kp1 kp1 5 NULL 48 Using where; Using index; LooseScan +1 PRIMARY t3 ALL NULL NULL NULL NULL 100 Using where; Using join buffer (flat, BNL join) create table t4 (pk int primary key); insert into t4 select a from t3; explain select * from t3 where a in (select t1.kp1 from t1,t4 where kp1<20 @@ -1345,10 +1345,10 @@ create table t2 as select a as a, a as b from t0 where a < 3; insert into t2 select * from t2; explain select * from t1 where (a,b,c) in (select X.a, Y.a, Z.a from t2 X, t2 Y, t2 Z where X.b=33); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where -1 PRIMARY X hash_ALL NULL #hash#$hj 5 test.t1.a 6 Using where; Start temporary; Using join buffer (flat, BNLH join) -1 PRIMARY Y hash_ALL NULL #hash#$hj 5 test.t1.b 6 Using where; Using join buffer (incremental, BNLH join) -1 PRIMARY Z hash_ALL NULL #hash#$hj 5 test.t1.c 6 Using where; End temporary; Using join buffer (incremental, BNLH join) +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY X ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 PRIMARY Y ALL NULL NULL NULL NULL 6 Using where; Using join buffer (incremental, BNL join) +1 PRIMARY Z ALL NULL NULL NULL NULL 6 Using where; FirstMatch(t1); Using join buffer (incremental, BNL join) drop table t0,t1,t2; set @@optimizer_switch=@save_optimizer_switch; diff --git a/mysql-test/r/subselect4.result b/mysql-test/r/subselect4.result index f9337ddc78a..6c942bca31a 100644 --- a/mysql-test/r/subselect4.result +++ b/mysql-test/r/subselect4.result @@ -1226,22 +1226,25 @@ CREATE TABLE t4 (c1 varchar(1) primary key); INSERT INTO t4 VALUES ('k'), ('d'); SET @save_optimizer_switch=@@optimizer_switch; SET optimizer_switch='outer_join_with_cache=off'; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; EXPLAIN SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2); Using join buffer (flat, BNL join) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); c1 c1 EXPLAIN SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 system NULL NULL NULL NULL 0 const row not found -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t2); Using join buffer (flat, BNL join) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; FirstMatch(t1) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); c1 c1 +SET optimizer_switch='materialization=on'; EXPLAIN SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2); id select_type table type possible_keys key key_len ref rows Extra diff --git a/mysql-test/r/subselect_extra.result b/mysql-test/r/subselect_extra.result index 9246128391e..53a38bf6e8e 100644 --- a/mysql-test/r/subselect_extra.result +++ b/mysql-test/r/subselect_extra.result @@ -307,7 +307,8 @@ EXPLAIN SELECT 1 FROM t1 WHERE a IN (SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2)); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 index PRIMARY,i2 PRIMARY 4 NULL 144 Using index -1 PRIMARY t1 ALL NULL NULL NULL NULL 144 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144 CREATE TABLE t2 (a INT, b INT, KEY(a)); INSERT INTO t2 VALUES (1, 1), (2, 2), (3,3), (4,4); EXPLAIN SELECT a, SUM(b) FROM t2 GROUP BY a LIMIT 2; @@ -320,7 +321,8 @@ EXPLAIN SELECT 1 FROM t2 WHERE a IN (SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2)); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 index a a 5 NULL 4 Using index -1 PRIMARY t1 ALL NULL NULL NULL NULL 144 Using where; FirstMatch(t2); Using join buffer (flat, BNL join) +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 4 func 1 +2 MATERIALIZED t1 ALL NULL NULL NULL NULL 144 DROP TABLE t1, t2; # # From derived_view.test diff --git a/mysql-test/r/subselect_mat_cost.result b/mysql-test/r/subselect_mat_cost.result index 3f465f1a7d0..e5f2df1c5c1 100644 --- a/mysql-test/r/subselect_mat_cost.result +++ b/mysql-test/r/subselect_mat_cost.result @@ -512,8 +512,8 @@ FROM City JOIN Country ON City.Country = Country.Code GROUP BY City.Name HAVING City.Name IN (select Name from Country where population < 1000000); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY City ALL Country NULL NULL NULL 4080 Using temporary; Using filesort -1 PRIMARY Country eq_ref PRIMARY PRIMARY 3 world.City.Country 1 Using index +1 PRIMARY Country index PRIMARY PRIMARY 3 NULL 239 Using index; Using temporary; Using filesort +1 PRIMARY City ref Country Country 3 world.Country.Code 18 2 MATERIALIZED Country ALL Name NULL NULL NULL 239 Using where SELECT City.Name, City.Population FROM City JOIN Country ON City.Country = Country.Code diff --git a/mysql-test/r/subselect_no_mat.result b/mysql-test/r/subselect_no_mat.result index c55cb0a425a..8959853f16f 100644 --- a/mysql-test/r/subselect_no_mat.result +++ b/mysql-test/r/subselect_no_mat.result @@ -4340,6 +4340,9 @@ LEFT(t1.a1,1) SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); a2 DROP TABLE t1, t2, t3; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -4371,6 +4374,7 @@ id select_type table type possible_keys key key_len ref rows Extra SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); a b DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); EXPLAIN @@ -4467,6 +4471,8 @@ a drop table t1, t2; CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 @@ -4479,6 +4485,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary Warnings: Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,<exists>(select min(`test`.`t1`.`a`) from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (1 = <ref_null_helper>(min(`test`.`t1`.`a`)))))) +SET join_cache_level=@save_join_cache_level; DROP TABLE t1; # # Bug#45061: Incorrectly market field caused wrong result. @@ -5228,16 +5235,19 @@ CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); INSERT INTO t2 VALUES (11,1); INSERT INTO t2 VALUES (12,2); INSERT INTO t2 VALUES (15,4); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 3 1 PRIMARY it eq_ref PRIMARY PRIMARY 4 test.t1.pk 1 Using index -1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(it); Using join buffer (flat, BNL join) +1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(it) SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); pk i 11 0 12 5 15 0 +SET join_cache_level=@save_join_cache_level; DROP table t1,t2; # # Bug#751350: crash with pushed condition for outer references when diff --git a/mysql-test/r/subselect_no_opts.result b/mysql-test/r/subselect_no_opts.result index 0b77366469c..1a937bbcd5f 100644 --- a/mysql-test/r/subselect_no_opts.result +++ b/mysql-test/r/subselect_no_opts.result @@ -1503,10 +1503,10 @@ a explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 ref a a 5 func 1001 100.00 Using index -2 DEPENDENT SUBQUERY t3 index a a 5 NULL 3 100.00 Using where; Using index; Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY t3 index a a 5 NULL 3 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 ref a a 10 func,test.t3.a 1167 100.00 Using index Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <in_optimizer>(`test`.`t2`.`a`,<exists>(select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`a`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`)))) insert into t1 values (3,31); select * from t2 where t2.a in (select a from t1 where t1.b <> 30); a @@ -4336,6 +4336,9 @@ LEFT(t1.a1,1) SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); a2 DROP TABLE t1, t2, t3; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -4367,6 +4370,7 @@ id select_type table type possible_keys key key_len ref rows Extra SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); a b DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); EXPLAIN @@ -4463,6 +4467,8 @@ a drop table t1, t2; CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 @@ -4475,6 +4481,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary Warnings: Note 1003 select 1 AS `1` from `test`.`t1` where <in_optimizer>(1,<exists>(select min(`test`.`t1`.`a`) from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` having (1 = <ref_null_helper>(min(`test`.`t1`.`a`))))) +SET join_cache_level=@save_join_cache_level; DROP TABLE t1; # # Bug#45061: Incorrectly market field caused wrong result. @@ -5224,16 +5231,19 @@ CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); INSERT INTO t2 VALUES (11,1); INSERT INTO t2 VALUES (12,2); INSERT INTO t2 VALUES (15,4); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where -2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index 2 DEPENDENT SUBQUERY it eq_ref PRIMARY PRIMARY 4 func 1 Using index +2 DEPENDENT SUBQUERY t2 index NULL PRIMARY 4 NULL 3 Using index SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); pk i 11 0 12 5 15 0 +SET join_cache_level=@save_join_cache_level; DROP table t1,t2; # # Bug#751350: crash with pushed condition for outer references when diff --git a/mysql-test/r/subselect_no_scache.result b/mysql-test/r/subselect_no_scache.result index fb9cda3c412..56e06b948a1 100644 --- a/mysql-test/r/subselect_no_scache.result +++ b/mysql-test/r/subselect_no_scache.result @@ -4342,6 +4342,9 @@ LEFT(t1.a1,1) SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); a2 DROP TABLE t1, t2, t3; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -4373,6 +4376,7 @@ id select_type table type possible_keys key key_len ref rows Extra SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); a b DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); EXPLAIN @@ -4469,20 +4473,23 @@ a drop table t1, t2; CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 1 PRIMARY <subquery2> const distinct_key distinct_key 5 const 1 100.00 +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary Warnings: Note 1003 select 1 AS `1` from <materialize> (select min(`test`.`t1`.`a`) from `test`.`t1` group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`min(a)` = 1) EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 WHERE a > 3 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 1 PRIMARY <subquery2> const distinct_key distinct_key 5 const 1 100.00 +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary Warnings: Note 1003 select 1 AS `1` from <materialize> (select min(`test`.`t1`.`a`) from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a`) join `test`.`t1` where (`<subquery2>`.`min(a)` = 1) +SET join_cache_level=@save_join_cache_level; DROP TABLE t1; # # Bug#45061: Incorrectly market field caused wrong result. @@ -5233,16 +5240,19 @@ CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); INSERT INTO t2 VALUES (11,1); INSERT INTO t2 VALUES (12,2); INSERT INTO t2 VALUES (15,4); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL PRIMARY NULL NULL NULL 3 1 PRIMARY it eq_ref PRIMARY PRIMARY 4 test.t1.pk 1 Using index -1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(it); Using join buffer (flat, BNL join) +1 PRIMARY t2 index NULL PRIMARY 4 NULL 3 Using index; FirstMatch(it) SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); pk i 11 0 12 5 15 0 +SET join_cache_level=@save_join_cache_level; DROP table t1,t2; # # Bug#751350: crash with pushed condition for outer references when diff --git a/mysql-test/r/subselect_no_semijoin.result b/mysql-test/r/subselect_no_semijoin.result index 381b2f12665..b92230cff3b 100644 --- a/mysql-test/r/subselect_no_semijoin.result +++ b/mysql-test/r/subselect_no_semijoin.result @@ -1503,10 +1503,10 @@ a explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 index NULL a 5 NULL 4 100.00 Using where; Using index -2 DEPENDENT SUBQUERY t1 ref a a 5 func 1001 100.00 Using index -2 DEPENDENT SUBQUERY t3 index a a 5 NULL 3 100.00 Using where; Using index; Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY t3 index a a 5 NULL 3 100.00 Using where; Using index +2 DEPENDENT SUBQUERY t1 ref a a 10 func,test.t3.a 1167 100.00 Using index Warnings: -Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where ((`test`.`t3`.`a` = `test`.`t1`.`b`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))) +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` where <expr_cache><`test`.`t2`.`a`>(<in_optimizer>(`test`.`t2`.`a`,<exists>(select `test`.`t1`.`a` from `test`.`t1` join `test`.`t3` where ((`test`.`t1`.`b` = `test`.`t3`.`a`) and (<cache>(`test`.`t2`.`a`) = `test`.`t1`.`a`))))) insert into t1 values (3,31); select * from t2 where t2.a in (select a from t1 where t1.b <> 30); a @@ -4336,6 +4336,9 @@ LEFT(t1.a1,1) SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); a2 DROP TABLE t1, t2, t3; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -4346,7 +4349,7 @@ CREATE INDEX I2 ON t1 (b); EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where -2 MATERIALIZED t1 index I1 I1 2 NULL 2 Using index +2 DEPENDENT SUBQUERY t1 index_subquery I1 I1 2 func 2 Using index; Using where SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1); a b CREATE TABLE t2 (a VARCHAR(1), b VARCHAR(10)); @@ -4356,17 +4359,18 @@ CREATE INDEX I2 ON t2 (b); EXPLAIN SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where -2 MATERIALIZED t2 index I1 I1 4 NULL 2 Using index +2 DEPENDENT SUBQUERY t2 index_subquery I1 I1 4 func 2 Using index; Using where SELECT a,b FROM t2 WHERE b IN (SELECT a FROM t2); a b EXPLAIN SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where -2 MATERIALIZED t1 index I1 I1 2 NULL 2 Using where; Using index +2 DEPENDENT SUBQUERY t1 index_subquery I1 I1 2 func 2 Using index; Using where SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); a b DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); EXPLAIN @@ -4463,6 +4467,8 @@ a drop table t1, t2; CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 2 100.00 @@ -4475,6 +4481,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra 2 MATERIALIZED t1 ALL NULL NULL NULL NULL 2 100.00 Using where; Using temporary Warnings: Note 1003 select 1 AS `1` from `test`.`t1` where <expr_cache><1>(<in_optimizer>(1,1 in ( <materialize> (select min(`test`.`t1`.`a`) from `test`.`t1` where (`test`.`t1`.`a` > 3) group by `test`.`t1`.`a` ), <primary_index_lookup>(1 in <temporary table> on distinct_key where ((1 = `<subquery2>`.`min(a)`)))))) +SET join_cache_level=@save_join_cache_level; DROP TABLE t1; # # Bug#45061: Incorrectly market field caused wrong result. @@ -5224,16 +5231,19 @@ CREATE TABLE t2 (pk INTEGER PRIMARY KEY, i INTEGER NOT NULL); INSERT INTO t2 VALUES (11,1); INSERT INTO t2 VALUES (12,2); INSERT INTO t2 VALUES (15,4); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where 2 MATERIALIZED t2 index NULL PRIMARY 4 NULL 3 Using index -2 MATERIALIZED it index PRIMARY PRIMARY 4 NULL 3 Using index; Using join buffer (flat, BNL join) +2 MATERIALIZED it index PRIMARY PRIMARY 4 NULL 3 Using index SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); pk i 11 0 12 5 15 0 +SET join_cache_level=@save_join_cache_level; DROP table t1,t2; # # Bug#751350: crash with pushed condition for outer references when diff --git a/mysql-test/r/subselect_sj.result b/mysql-test/r/subselect_sj.result index 47cf21f3e43..b1b0bde7c57 100644 --- a/mysql-test/r/subselect_sj.result +++ b/mysql-test/r/subselect_sj.result @@ -970,11 +970,11 @@ SELECT `varchar_key` , `varchar_nokey` FROM t1 WHERE `varchar_nokey` < 'n' XOR `pk` ) ; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00 -1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 8 func,func 1 100.00 +1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 15 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00 Using where; Using join buffer (flat, BNL join) 2 MATERIALIZED t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where Warnings: -Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_key` < 'n') xor `test`.`t1`.`pk`)) +Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and (`test`.`t2`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_key` < 'n') xor `test`.`t1`.`pk`)) SELECT varchar_nokey FROM t2 WHERE ( `varchar_nokey` , `varchar_nokey` ) IN ( @@ -1938,45 +1938,18 @@ DROP TABLE t1, t2, t4, t5; # # BUG#861147: Assertion `fixed == 1' failed in Item_func_eq::val_int() with semijoin + materialization + max_join_size # -CREATE TABLE t1 ( f2 int) ; -CREATE TABLE t2 ( f1 int, f3 int, f4 varchar(3), f5 varchar(35)) ; -INSERT INTO t2 VALUES (4057,9,'USA','Visalia'),(3993,11,'USA','Waco'), -(3948,14,'USA','Warren'),(3813,57,'USA','Washington'), -(4010,11,'USA','Waterbury'),(4017,11,'USA','West Covina'), -(4004,11,'USA','West Valley City'),(4033,10,'USA','Westminster'), -(3842,34,'USA','Wichita'),(4018,10,'USA','Wichita Falls'), -(3899,19,'USA','Winston-Salem'),(3914,17,'USA','Worcester'), -(3888,20,'USA','Yonkers'); -CREATE TABLE t3 ( f3 int, f4 varchar(3)) ; -INSERT INTO t3 VALUES (86,'USA'); -CREATE TABLE t4 ( f3 int, f4 varchar(3), f5 varchar(52)) ; -INSERT INTO t4 VALUES (0,'RUS','Belorussian'),(0,'USA','Portuguese'); -CREATE TABLE t5 ( f2 int) ; -CREATE TABLE t6 ( f4 varchar(3)); -INSERT INTO t6 VALUES ('RUS'),('USA'); +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); set @tmp_mjs_861147= @@max_join_size; SET max_join_size=10; set @tmp_os_861147= @@optimizer_switch; set @@optimizer_switch='semijoin=on,materialization=on'; -SELECT * -FROM t1 -WHERE ( 1 , 3 ) IN ( -SELECT t2.f1 , MAX( t3.f3 ) -FROM t2 -JOIN t3 -WHERE t3.f4 IN ( -SELECT t4.f5 -FROM t4 -STRAIGHT_JOIN t5 -WHERE t4.f4 < t2.f5 -) -) AND ( 'p' , 'k' ) IN ( -SELECT f4 , f4 FROM t6 -); +explain +select * from t1 where a in (select max(A.a + B.a + C.a) from t1 A, t1 B, t1 C); ERROR 42000: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay set max_join_size= @tmp_mjs_861147; set optimizer_switch= @tmp_os_861147; -DROP TABLE t1,t2,t3,t4,t5,t6; +drop table t1; # # BUG#877288: Wrong result with semijoin + materialization + multipart key # diff --git a/mysql-test/r/subselect_sj2.result b/mysql-test/r/subselect_sj2.result index 5bf470a5245..8df3bd8f9b8 100644 --- a/mysql-test/r/subselect_sj2.result +++ b/mysql-test/r/subselect_sj2.result @@ -69,9 +69,9 @@ insert into t3 select a,a, a,a,a from t0; insert into t3 select a,a, a+100,a+100,a+100 from t0; explain select * from t3 where b in (select a from t1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t3 ALL b NULL NULL NULL 20 -1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 -2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 3 +1 PRIMARY t3 ref b b 5 test.t1.a 1 +2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 Using where select * from t3 where b in (select a from t1); a b pk1 pk2 pk3 1 1 1 1 1 @@ -878,9 +878,9 @@ SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a WHERE t3.b IN (SELECT b FROM t4); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 1 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where 1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2 -1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 2 MATERIALIZED t4 ALL NULL NULL NULL NULL 2 3 DERIVED t1 ALL NULL NULL NULL NULL 1 SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a diff --git a/mysql-test/r/subselect_sj2_jcl6.result b/mysql-test/r/subselect_sj2_jcl6.result index 80c24652cbd..222d34d9bf4 100644 --- a/mysql-test/r/subselect_sj2_jcl6.result +++ b/mysql-test/r/subselect_sj2_jcl6.result @@ -80,8 +80,9 @@ insert into t3 select a,a, a,a,a from t0; insert into t3 select a,a, a+100,a+100,a+100 from t0; explain select * from t3 where b in (select a from t1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t3 ALL b NULL NULL NULL 20 -1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where; FirstMatch(t3); Using join buffer (flat, BNL join) +1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 3 +1 PRIMARY t3 ref b b 5 test.t1.a 1 Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 Using where select * from t3 where b in (select a from t1); a b pk1 pk2 pk3 1 1 1 1 1 @@ -131,8 +132,9 @@ set join_buffer_size= @save_join_buffer_size; set max_heap_table_size= @save_max_heap_table_size; explain select * from t1 where a in (select b from t2); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where -1 PRIMARY t2 ref b b 5 test.t1.a 2 Using index; FirstMatch(t1) +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 +2 MATERIALIZED t2 index b b 5 NULL 20 Using index select * from t1; a b 1 1 @@ -890,9 +892,9 @@ SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a WHERE t3.b IN (SELECT b FROM t4); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 1 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 1 PRIMARY t2 hash_ALL NULL #hash#$hj 5 test.t3.a 1 Using where; Using join buffer (flat, BNLH join) 1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2 Using join buffer (incremental, BNL join) -1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 2 MATERIALIZED t4 ALL NULL NULL NULL NULL 2 3 DERIVED t1 ALL NULL NULL NULL NULL 1 SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a @@ -973,7 +975,8 @@ EXPLAIN SELECT * FROM t1 WHERE b IN (SELECT a FROM t2 GROUP BY a); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 1 -1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 +2 MATERIALIZED t2 ALL NULL NULL NULL NULL 1 SELECT * FROM t1 WHERE b IN (SELECT a FROM t2 GROUP BY a); a b v v diff --git a/mysql-test/r/subselect_sj2_mat.result b/mysql-test/r/subselect_sj2_mat.result index 5a9c3b90755..252f3c73a55 100644 --- a/mysql-test/r/subselect_sj2_mat.result +++ b/mysql-test/r/subselect_sj2_mat.result @@ -71,9 +71,9 @@ insert into t3 select a,a, a,a,a from t0; insert into t3 select a,a, a+100,a+100,a+100 from t0; explain select * from t3 where b in (select a from t1); id select_type table type possible_keys key key_len ref rows Extra -1 PRIMARY t3 ALL b NULL NULL NULL 20 -1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 -2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 3 +1 PRIMARY t3 ref b b 5 test.t1.a 1 +2 MATERIALIZED t1 ALL NULL NULL NULL NULL 3 Using where select * from t3 where b in (select a from t1); a b pk1 pk2 pk3 1 1 1 1 1 @@ -880,9 +880,9 @@ SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a WHERE t3.b IN (SELECT b FROM t4); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t3 ALL NULL NULL NULL NULL 1 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 1 PRIMARY t2 ALL NULL NULL NULL NULL 1 Using where 1 PRIMARY <derived3> ALL NULL NULL NULL NULL 2 -1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 2 MATERIALIZED t4 ALL NULL NULL NULL NULL 2 3 DERIVED t1 ALL NULL NULL NULL NULL 1 SELECT * FROM t3 LEFT JOIN (v1,t2) ON t3.a = t2.a diff --git a/mysql-test/r/subselect_sj_jcl6.result b/mysql-test/r/subselect_sj_jcl6.result index b5c79ac153c..2df7d99ee64 100644 --- a/mysql-test/r/subselect_sj_jcl6.result +++ b/mysql-test/r/subselect_sj_jcl6.result @@ -983,10 +983,11 @@ SELECT `varchar_key` , `varchar_nokey` FROM t1 WHERE `varchar_nokey` < 'n' XOR `pk` ) ; id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00 -1 PRIMARY t1 ref varchar_key varchar_key 3 test.t2.varchar_nokey 2 100.00 Using where; FirstMatch(t2); Using join buffer (flat, BKA join); Key-ordered Rowid-ordered scan +1 PRIMARY <subquery2> ALL distinct_key NULL NULL NULL 15 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 18 100.00 Using where; Using join buffer (flat, BNL join) +2 MATERIALIZED t1 ALL varchar_key NULL NULL NULL 15 100.00 Using where Warnings: -Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_key` = `test`.`t2`.`varchar_nokey`) and (`test`.`t1`.`varchar_nokey` = `test`.`t2`.`varchar_nokey`) and ((`test`.`t2`.`varchar_nokey` < 'n') xor `test`.`t1`.`pk`)) +Note 1003 select `test`.`t2`.`varchar_nokey` AS `varchar_nokey` from `test`.`t2` semi join (`test`.`t1`) where ((`test`.`t1`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and (`test`.`t2`.`varchar_nokey` = `test`.`t1`.`varchar_key`) and ((`test`.`t1`.`varchar_key` < 'n') xor `test`.`t1`.`pk`)) SELECT varchar_nokey FROM t2 WHERE ( `varchar_nokey` , `varchar_nokey` ) IN ( @@ -1065,8 +1066,10 @@ AND t1.val IN (SELECT t3.val FROM t3 WHERE t3.val LIKE 'a%' OR t3.val LIKE 'e%'); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY t1 ALL NULL NULL NULL NULL 5 -1 PRIMARY t3 ALL NULL NULL NULL NULL 5 Using where; FirstMatch(t1); Using join buffer (flat, BNL join) -1 PRIMARY t2 ALL NULL NULL NULL NULL 6 Using where; FirstMatch(t3); Using join buffer (incremental, BNL join) +1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 14 func 1 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 14 func 1 +3 MATERIALIZED t3 ALL NULL NULL NULL NULL 5 Using where +2 MATERIALIZED t2 ALL NULL NULL NULL NULL 6 Using where SELECT * FROM t1 WHERE t1.val IN (SELECT t2.val FROM t2 @@ -1285,9 +1288,11 @@ select * from t1 A, t1 B where A.a = B.a and A.a in (select a from t2 C) and B.a in (select a from t2 D); id select_type table type possible_keys key key_len ref rows Extra 1 PRIMARY A ALL NULL NULL NULL NULL 3 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 1 PRIMARY B ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) -1 PRIMARY C ALL NULL NULL NULL NULL 3 Using where; FirstMatch(B); Using join buffer (incremental, BNL join) -1 PRIMARY D ALL NULL NULL NULL NULL 3 Using where; FirstMatch(C); Using join buffer (incremental, BNL join) +1 PRIMARY <subquery3> eq_ref distinct_key distinct_key 5 func 1 +2 MATERIALIZED C ALL NULL NULL NULL NULL 3 +3 MATERIALIZED D ALL NULL NULL NULL NULL 3 drop table t1, t2; # # BUG#784441: Abort on semijoin with a view as the inner table @@ -1629,12 +1634,13 @@ CREATE VIEW v4 AS SELECT DISTINCT f2 FROM t4 ; explain extended SELECT * FROM t1 NATURAL LEFT JOIN (t2, t3) WHERE t2.f3 IN (SELECT * FROM t4); id select_type table type possible_keys key key_len ref rows filtered Extra -1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where -1 PRIMARY t4 ref f2 f2 5 test.t2.f3 2 100.00 Using index; FirstMatch(t2) +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 +1 PRIMARY <subquery2> eq_ref distinct_key distinct_key 5 func 1 100.00 1 PRIMARY t1 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) 1 PRIMARY t3 ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (incremental, BNL join) +2 MATERIALIZED t4 index f2 f2 5 NULL 2 100.00 Using index Warnings: -Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f2` AS `f2`,`test`.`t2`.`f3` AS `f3`,`test`.`t3`.`f3` AS `f3` from `test`.`t1` semi join (`test`.`t4`) join `test`.`t2` join `test`.`t3` where ((`test`.`t1`.`f2` = `test`.`t2`.`f2`) and (`test`.`t3`.`f1` = `test`.`t1`.`f1`) and (`test`.`t4`.`f2` = `test`.`t2`.`f3`)) +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f2` AS `f2`,`test`.`t2`.`f3` AS `f3`,`test`.`t3`.`f3` AS `f3` from `test`.`t1` semi join (`test`.`t4`) join `test`.`t2` join `test`.`t3` where ((`test`.`t1`.`f2` = `test`.`t2`.`f2`) and (`test`.`t3`.`f1` = `test`.`t1`.`f1`)) SELECT * FROM t1 NATURAL LEFT JOIN (t2, t3) WHERE t2.f3 IN (SELECT * FROM t4); f1 f2 f3 f3 2 0 0 0 @@ -1946,45 +1952,18 @@ DROP TABLE t1, t2, t4, t5; # # BUG#861147: Assertion `fixed == 1' failed in Item_func_eq::val_int() with semijoin + materialization + max_join_size # -CREATE TABLE t1 ( f2 int) ; -CREATE TABLE t2 ( f1 int, f3 int, f4 varchar(3), f5 varchar(35)) ; -INSERT INTO t2 VALUES (4057,9,'USA','Visalia'),(3993,11,'USA','Waco'), -(3948,14,'USA','Warren'),(3813,57,'USA','Washington'), -(4010,11,'USA','Waterbury'),(4017,11,'USA','West Covina'), -(4004,11,'USA','West Valley City'),(4033,10,'USA','Westminster'), -(3842,34,'USA','Wichita'),(4018,10,'USA','Wichita Falls'), -(3899,19,'USA','Winston-Salem'),(3914,17,'USA','Worcester'), -(3888,20,'USA','Yonkers'); -CREATE TABLE t3 ( f3 int, f4 varchar(3)) ; -INSERT INTO t3 VALUES (86,'USA'); -CREATE TABLE t4 ( f3 int, f4 varchar(3), f5 varchar(52)) ; -INSERT INTO t4 VALUES (0,'RUS','Belorussian'),(0,'USA','Portuguese'); -CREATE TABLE t5 ( f2 int) ; -CREATE TABLE t6 ( f4 varchar(3)); -INSERT INTO t6 VALUES ('RUS'),('USA'); +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); set @tmp_mjs_861147= @@max_join_size; SET max_join_size=10; set @tmp_os_861147= @@optimizer_switch; set @@optimizer_switch='semijoin=on,materialization=on'; -SELECT * -FROM t1 -WHERE ( 1 , 3 ) IN ( -SELECT t2.f1 , MAX( t3.f3 ) -FROM t2 -JOIN t3 -WHERE t3.f4 IN ( -SELECT t4.f5 -FROM t4 -STRAIGHT_JOIN t5 -WHERE t4.f4 < t2.f5 -) -) AND ( 'p' , 'k' ) IN ( -SELECT f4 , f4 FROM t6 -); +explain +select * from t1 where a in (select max(A.a + B.a + C.a) from t1 A, t1 B, t1 C); ERROR 42000: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay set max_join_size= @tmp_mjs_861147; set optimizer_switch= @tmp_os_861147; -DROP TABLE t1,t2,t3,t4,t5,t6; +drop table t1; # # BUG#877288: Wrong result with semijoin + materialization + multipart key # diff --git a/mysql-test/suite/pbxt/r/greedy_optimizer.result b/mysql-test/suite/pbxt/r/greedy_optimizer.result index 7b46f4275b0..6297b51328a 100644 --- a/mysql-test/suite/pbxt/r/greedy_optimizer.result +++ b/mysql-test/suite/pbxt/r/greedy_optimizer.result @@ -202,28 +202,28 @@ select @@optimizer_search_depth; 0 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1372.225316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1372.225316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -231,11 +231,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -243,11 +243,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -255,11 +255,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -267,11 +267,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 set optimizer_search_depth=1; select @@optimizer_search_depth; @@optimizer_search_depth @@ -287,7 +287,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -299,7 +299,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -311,7 +311,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -323,7 +323,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -335,7 +335,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -347,35 +347,35 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 set optimizer_search_depth=62; select @@optimizer_search_depth; @@optimizer_search_depth 62 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1372.225316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL NULL NULL NULL NULL 3 -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.c22 1 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t4.c42 1 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1372.225316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -383,11 +383,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -395,11 +395,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -407,11 +407,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where @@ -419,11 +419,11 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 eq_ref PRIMARY PRIMARY 4 test.t2.c21 1 Using where 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 290.146368 +Last_query_cost 363.346368 set optimizer_prune_level=1; select @@optimizer_prune_level; @@optimizer_prune_level @@ -443,7 +443,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -455,55 +455,55 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 set optimizer_search_depth=1; select @@optimizer_search_depth; @@optimizer_search_depth @@ -519,7 +519,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -531,7 +531,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -543,7 +543,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -555,7 +555,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -567,7 +567,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where @@ -579,7 +579,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 set optimizer_search_depth=62; select @@optimizer_search_depth; @@optimizer_search_depth @@ -595,7 +595,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c12 = t2.c21 and t2.c22 = t3.c31 and t3.c32 = t4.c41 and t4.c42 = t5.c51 and t5.c52 = t6.c61 and t6.c62 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL NULL NULL NULL NULL 3 @@ -607,54 +607,54 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t6.c62 1 Using index show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 822.625316 +Last_query_cost 1694.425316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where -1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using index -1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using index -1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) 1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using index +1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t1, t2, t3, t4, t5, t6, t7 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 explain select t1.c11 from t7, t6, t5, t4, t3, t2, t1 where t1.c11 = t2.c21 and t1.c12 = t3.c31 and t1.c13 = t4.c41 and t1.c14 = t5.c51 and t1.c15 = t6.c61 and t1.c16 = t7.c71 and t2.c22 = t3.c32 and t2.c23 = t4.c42 and t2.c24 = t5.c52 and t2.c25 = t6.c62 and t2.c26 = t7.c72 and t3.c33 = t4.c43 and t3.c34 = t5.c53 and t3.c35 = t6.c63 and t3.c36 = t7.c73 and t4.c42 = t5.c54 and t4.c43 = t6.c64 and t4.c44 = t7.c74 and t5.c52 = t6.c65 and t5.c53 = t7.c75 and t6.c62 = t7.c76; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 3 Using where +1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 +1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where +1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 6 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t1.c12 1 Using where 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t5 eq_ref PRIMARY PRIMARY 4 test.t1.c14 1 Using where 1 SIMPLE t6 ALL NULL NULL NULL NULL 18 Using where; Using join buffer (flat, BNL join) -1 SIMPLE t7 eq_ref PRIMARY PRIMARY 4 test.t1.c16 1 Using where show status like 'Last_query_cost'; Variable_name Value -Last_query_cost 795.625316 +Last_query_cost 844.825316 drop table t1,t2,t3,t4,t5,t6,t7; set join_cache_level=@save_join_cache_level; diff --git a/mysql-test/suite/pbxt/r/join.result b/mysql-test/suite/pbxt/r/join.result index 5035f5da9bd..3a1759a18f4 100644 --- a/mysql-test/suite/pbxt/r/join.result +++ b/mysql-test/suite/pbxt/r/join.result @@ -801,7 +801,7 @@ id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE B eq_ref PRIMARY PRIMARY 4 test.A.b 1 show status like '%cost%'; Variable_name Value -Last_query_cost 24.262158 +Last_query_cost 28.262158 select '^^: The above should be ~= 20 + cost(select * from t1). Value less than 20 is an error' Z; Z ^^: The above should be ~= 20 + cost(select * from t1). Value less than 20 is an error diff --git a/mysql-test/suite/pbxt/r/select.result b/mysql-test/suite/pbxt/r/select.result index 869df25504a..58a1a326f6b 100644 --- a/mysql-test/suite/pbxt/r/select.result +++ b/mysql-test/suite/pbxt/r/select.result @@ -2204,10 +2204,10 @@ a a select * from (t1 as t2 left join t1 as t3 using (a)) inner join t1 on t1.a>1; a a 1 2 -2 2 -3 2 1 3 +2 2 2 3 +3 2 3 3 select * from t1 inner join (t1 as t2 left join t1 as t3 using (a)) on t1.a>1; a a diff --git a/mysql-test/suite/pbxt/r/subselect.result b/mysql-test/suite/pbxt/r/subselect.result index cc513a1444d..0a065e61edf 100644 --- a/mysql-test/suite/pbxt/r/subselect.result +++ b/mysql-test/suite/pbxt/r/subselect.result @@ -1366,8 +1366,8 @@ a explain extended select * from t2 where t2.a in (select t1.a from t1,t3 where t1.b=t3.a); id select_type table type possible_keys key key_len ref rows filtered Extra 1 PRIMARY t2 index a a 5 NULL 4 100.00 Using where; Using index -1 PRIMARY t1 ref a a 5 test.t2.a 1 100.00 Using index; Start temporary -1 PRIMARY t3 index a a 5 NULL 3 100.00 Using where; Using index; End temporary +1 PRIMARY t1 ref a a 5 test.t2.a 1 100.00 Using where; Using index +1 PRIMARY t3 ref a a 5 test.t1.b 1 100.00 Using index; FirstMatch(t2) Warnings: Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t2` semi join (`test`.`t1` join `test`.`t3`) where ((`test`.`t1`.`a` = `test`.`t2`.`a`) and (`test`.`t3`.`a` = `test`.`t1`.`b`)) insert into t1 values (3,31); @@ -4225,6 +4225,9 @@ LEFT(t1.a1,1) SELECT a2 FROM t2 WHERE t2.a2 IN (SELECT t1.a1 FROM t1,t3 WHERE t1.b1=t3.a3); a2 DROP TABLE t1, t2, t3; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -4256,6 +4259,7 @@ id select_type table type possible_keys key key_len ref rows Extra SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); a b DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; CREATE TABLE t1(a INT, b INT); INSERT INTO t1 VALUES (1,1), (1,2), (2,3), (2,4); EXPLAIN diff --git a/mysql-test/suite/pbxt/t/subselect.test b/mysql-test/suite/pbxt/t/subselect.test index 5f0835e0b03..aae7ff2d5f5 100644 --- a/mysql-test/suite/pbxt/t/subselect.test +++ b/mysql-test/suite/pbxt/t/subselect.test @@ -3099,6 +3099,10 @@ DROP TABLE t1, t2, t3; # Bug #30788: Inconsistent retrieval of char/varchar # +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; + CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -3120,6 +3124,7 @@ SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; # # Bug #32400: Complex SELECT query returns correct result only on some diff --git a/mysql-test/t/derived_view.test b/mysql-test/t/derived_view.test index 581d01058db..b674350af0a 100644 --- a/mysql-test/t/derived_view.test +++ b/mysql-test/t/derived_view.test @@ -1036,6 +1036,7 @@ CREATE TABLE t3 ( b int NOT NULL, e varchar(1) NOT NULL, d varchar(1) NOT NULL, KEY (e,b) ); INSERT INTO t3 VALUES (4,'x','x'),(9,'w','w'),(4,'d','d'),(8,'e','e'); +INSERT INTO t3 VALUES (14,'a','a'),(19,'b','b'),(14,'c','c'),(18,'d','d'); CREATE TABLE t4 (i int NOT NULL, m varchar(1) NOT NULL) ; INSERT INTO t4 VALUES (8,'m'),(9,'d'),(2,'s'),(4,'r'),(8,'m'); diff --git a/mysql-test/t/explain.test b/mysql-test/t/explain.test index d07f36b37a4..3e585656ba9 100644 --- a/mysql-test/t/explain.test +++ b/mysql-test/t/explain.test @@ -180,8 +180,8 @@ create table t2 (dt datetime not null); insert into t1 values ('2001-01-01 1:1:1', '1:1:1'), ('2001-01-01 1:1:1', '1:1:1'); insert into t2 values ('2001-01-01 1:1:1'), ('2001-01-01 1:1:1'); -SET @save_optimizer_switch=@@optimizer_switch; -SET optimizer_switch='semijoin_with_cache=off'; +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; flush tables; EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN (SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.dt IS NULL ); flush tables; @@ -190,7 +190,7 @@ flush tables; EXPLAIN SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' ); flush tables; SELECT OUTR.dt FROM t1 AS OUTR WHERE OUTR.dt IN ( SELECT INNR.dt FROM t2 AS INNR WHERE OUTR.t < '2005-11-13 7:41:31' ); -SET optimizer_switch=@save_optimizer_switch; +SET join_cache_level=@save_join_cache_level; drop tables t1, t2; --echo # diff --git a/mysql-test/t/subselect.test b/mysql-test/t/subselect.test index 2540232bd3b..9d87cbc486c 100644 --- a/mysql-test/t/subselect.test +++ b/mysql-test/t/subselect.test @@ -3248,6 +3248,10 @@ DROP TABLE t1, t2, t3; # Bug#30788 Inconsistent retrieval of char/varchar # +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; + CREATE TABLE t1 (a CHAR(1), b VARCHAR(10)); INSERT INTO t1 VALUES ('a', 'aa'); INSERT INTO t1 VALUES ('a', 'aaa'); @@ -3269,6 +3273,7 @@ SELECT a,b FROM t1 WHERE b IN (SELECT a FROM t1 WHERE LENGTH(a)<500); DROP TABLE t1,t2; +SET optimizer_switch= @save_optimizer_switch; # # Bug#32400 Complex SELECT query returns correct result only on some occasions @@ -3418,8 +3423,11 @@ drop table t1, t2; CREATE TABLE t1 (a INT); INSERT INTO t1 VALUES (1),(2); +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 GROUP BY a); EXPLAIN EXTENDED SELECT 1 FROM t1 WHERE 1 IN (SELECT min(a) FROM t1 WHERE a > 3 GROUP BY a); +SET join_cache_level=@save_join_cache_level; DROP TABLE t1; --echo # @@ -4430,8 +4438,12 @@ INSERT INTO t2 VALUES (11,1); INSERT INTO t2 VALUES (12,2); INSERT INTO t2 VALUES (15,4); + +SET @save_join_cache_level=@@join_cache_level; +SET join_cache_level=0; EXPLAIN SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); SELECT * FROM t1 WHERE pk IN (SELECT it.pk FROM t2 JOIN t2 AS it ON 1); +SET join_cache_level=@save_join_cache_level; DROP table t1,t2; diff --git a/mysql-test/t/subselect4.test b/mysql-test/t/subselect4.test index 0e51373fb01..b2e15c457d7 100644 --- a/mysql-test/t/subselect4.test +++ b/mysql-test/t/subselect4.test @@ -993,13 +993,16 @@ INSERT INTO t4 VALUES ('k'), ('d'); SET @save_optimizer_switch=@@optimizer_switch; SET optimizer_switch='outer_join_with_cache=off'; +SET optimizer_switch='semijoin_with_cache=off'; +SET optimizer_switch='materialization=off'; EXPLAIN SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); SELECT * FROM t1 RIGHT JOIN t2 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); EXPLAIN SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); SELECT * FROM t2 LEFT JOIN t1 ON t1.c1 WHERE 's' IN (SELECT c1 FROM t2); +SET optimizer_switch='materialization=on'; EXPLAIN SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2); SELECT * FROM (t2 LEFT JOIN t1 ON t1.c1) LEFT JOIN t3 on t3.c1 WHERE 's' IN (SELECT c1 FROM t2); diff --git a/mysql-test/t/subselect_sj.test b/mysql-test/t/subselect_sj.test index 2b64de47439..aee61e9bca3 100644 --- a/mysql-test/t/subselect_sj.test +++ b/mysql-test/t/subselect_sj.test @@ -1777,52 +1777,43 @@ DROP TABLE t1, t2, t4, t5; --echo # --echo # BUG#861147: Assertion `fixed == 1' failed in Item_func_eq::val_int() with semijoin + materialization + max_join_size --echo # -CREATE TABLE t1 ( f2 int) ; -CREATE TABLE t2 ( f1 int, f3 int, f4 varchar(3), f5 varchar(35)) ; -INSERT INTO t2 VALUES (4057,9,'USA','Visalia'),(3993,11,'USA','Waco'), - (3948,14,'USA','Warren'),(3813,57,'USA','Washington'), - (4010,11,'USA','Waterbury'),(4017,11,'USA','West Covina'), - (4004,11,'USA','West Valley City'),(4033,10,'USA','Westminster'), - (3842,34,'USA','Wichita'),(4018,10,'USA','Wichita Falls'), - (3899,19,'USA','Winston-Salem'),(3914,17,'USA','Worcester'), - (3888,20,'USA','Yonkers'); +#CREATE TABLE t1 ( f2 int) ; +#CREATE TABLE t2 ( f1 int, f3 int, f4 varchar(3), f5 varchar(35)) ; +#INSERT INTO t2 VALUES (4057,9,'USA','Visalia'),(3993,11,'USA','Waco'), +# (3948,14,'USA','Warren'),(3813,57,'USA','Washington'), +# (4010,11,'USA','Waterbury'),(4017,11,'USA','West Covina'), +# (4004,11,'USA','West Valley City'),(4033,10,'USA','Westminster'), +# (3842,34,'USA','Wichita'),(4018,10,'USA','Wichita Falls'), +# (3899,19,'USA','Winston-Salem'),(3914,17,'USA','Worcester'), +# (3888,20,'USA','Yonkers'); -CREATE TABLE t3 ( f3 int, f4 varchar(3)) ; -INSERT INTO t3 VALUES (86,'USA'); +#CREATE TABLE t3 ( f3 int, f4 varchar(3)) ; +#INSERT INTO t3 VALUES (86,'USA'); -CREATE TABLE t4 ( f3 int, f4 varchar(3), f5 varchar(52)) ; -INSERT INTO t4 VALUES (0,'RUS','Belorussian'),(0,'USA','Portuguese'); +#CREATE TABLE t4 ( f3 int, f4 varchar(3), f5 varchar(52)) ; +#INSERT INTO t4 VALUES (0,'RUS','Belorussian'),(0,'USA','Portuguese'); -CREATE TABLE t5 ( f2 int) ; +#CREATE TABLE t5 ( f2 int) ; -CREATE TABLE t6 ( f4 varchar(3)); -INSERT INTO t6 VALUES ('RUS'),('USA'); +#CREATE TABLE t6 ( f4 varchar(3)); +#INSERT INTO t6 VALUES ('RUS'),('USA'); +create table t1 (a int); +insert into t1 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); set @tmp_mjs_861147= @@max_join_size; SET max_join_size=10; set @tmp_os_861147= @@optimizer_switch; set @@optimizer_switch='semijoin=on,materialization=on'; --error ER_TOO_BIG_SELECT -SELECT * -FROM t1 -WHERE ( 1 , 3 ) IN ( - SELECT t2.f1 , MAX( t3.f3 ) - FROM t2 - JOIN t3 - WHERE t3.f4 IN ( - SELECT t4.f5 - FROM t4 - STRAIGHT_JOIN t5 - WHERE t4.f4 < t2.f5 - ) -) AND ( 'p' , 'k' ) IN ( - SELECT f4 , f4 FROM t6 -); +explain +select * from t1 where a in (select max(A.a + B.a + C.a) from t1 A, t1 B, t1 C); + set max_join_size= @tmp_mjs_861147; set optimizer_switch= @tmp_os_861147; -DROP TABLE t1,t2,t3,t4,t5,t6; +#DROP TABLE t1,t2,t3,t4,t5,t6; +drop table t1; --echo # --echo # BUG#877288: Wrong result with semijoin + materialization + multipart key diff --git a/sql/opt_subselect.cc b/sql/opt_subselect.cc index 3aa5a188a26..d06480391be 100644 --- a/sql/opt_subselect.cc +++ b/sql/opt_subselect.cc @@ -2738,10 +2738,12 @@ bool Duplicate_weedout_picker::check_qep(JOIN *join, } table_map dups_removed_fanout= 0; + double current_fanout= prefix_rec_count; for (uint j= first_dupsweedout_table; j <= idx; j++) { POSITION *p= join->positions + j; - dups_cost += p->read_time; + current_fanout *= p->records_read; + dups_cost += p->read_time + current_fanout / TIME_FOR_COMPARE; if (p->table->emb_sj_nest) { sj_inner_fanout *= p->records_read; diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 9ad945a22b3..cb620495897 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -5020,6 +5020,8 @@ best_access_path(JOIN *join, MY_BITMAP *eq_join_set= &s->table->eq_join_set; KEYUSE *hj_start_key= 0; + disable_jbuf= disable_jbuf || idx == join->const_tables; + Loose_scan_opt loose_scan_opt; DBUG_ENTER("best_access_path"); @@ -5880,7 +5882,8 @@ optimize_straight_join(JOIN *join, table_map join_tables) /* compute the cost of the new plan extended with 's' */ record_count*= join->positions[idx].records_read; - read_time+= join->positions[idx].read_time; + read_time+= join->positions[idx].read_time + + record_count / (double) TIME_FOR_COMPARE; advance_sj_state(join, join_tables, idx, &record_count, &read_time, &loose_scan_pos); @@ -5888,14 +5891,13 @@ optimize_straight_join(JOIN *join, table_map join_tables) ++idx; } - read_time+= record_count / (double) TIME_FOR_COMPARE; if (join->sort_by_table && join->sort_by_table != join->positions[join->const_tables].table->table) read_time+= record_count; // We have to make a temp table memcpy((uchar*) join->best_positions, (uchar*) join->positions, sizeof(POSITION)*idx); join->record_count= record_count; - join->best_read= read_time; + join->best_read= read_time - 0.001; } @@ -6063,7 +6065,8 @@ greedy_search(JOIN *join, /* compute the cost of the new plan extended with 'best_table' */ record_count*= join->positions[idx].records_read; - read_time+= join->positions[idx].read_time; + read_time+= join->positions[idx].read_time + + record_count / (double) TIME_FOR_COMPARE; remaining_tables&= ~(best_table->table->map); --size_remain; @@ -6171,7 +6174,7 @@ void JOIN::get_partial_cost_and_fanout(int end_tab_idx, if (tab->records_read && (cur_table_map & filter_map)) { record_count *= tab->records_read; - read_time += tab->read_time; + read_time += tab->read_time + record_count / (double) TIME_FOR_COMPARE; if (tab->emb_sj_nest) sj_inner_fanout *= tab->records_read; } @@ -6395,21 +6398,19 @@ best_extension_by_limited_search(JOIN *join, /* Compute the cost of extending the plan with 's' */ current_record_count= record_count * position->records_read; - current_read_time= read_time + position->read_time; + current_read_time=read_time + position->read_time + + current_record_count / (double) TIME_FOR_COMPARE; advance_sj_state(join, remaining_tables, idx, ¤t_record_count, ¤t_read_time, &loose_scan_pos); /* Expand only partial plans with lower cost than the best QEP so far */ - if ((current_read_time + - current_record_count / (double) TIME_FOR_COMPARE) >= join->best_read) + if (current_read_time >= join->best_read) { DBUG_EXECUTE("opt", print_plan(join, idx+1, current_record_count, read_time, - (current_read_time + - current_record_count / - (double) TIME_FOR_COMPARE), + current_read_time, "prune_by_cost");); restore_prev_nj_state(s); restore_prev_sj_state(remaining_tables, s, idx); @@ -6468,13 +6469,12 @@ best_extension_by_limited_search(JOIN *join, 'join' is either the best partial QEP with 'search_depth' relations, or the best complete QEP so far, whichever is smaller. */ - current_read_time+= current_record_count / (double) TIME_FOR_COMPARE; if (join->sort_by_table && join->sort_by_table != join->positions[join->const_tables].table->table) /* We have to make a temp table */ current_read_time+= current_record_count; - if ((search_depth == 1) || (current_read_time < join->best_read)) + if (current_read_time < join->best_read) { memcpy((uchar*) join->best_positions, (uchar*) join->positions, sizeof(POSITION) * (idx + 1)); |