diff options
Diffstat (limited to 'mysql-test/r/distinct.result')
| -rw-r--r-- | mysql-test/r/distinct.result | 71 |
1 files changed, 62 insertions, 9 deletions
diff --git a/mysql-test/r/distinct.result b/mysql-test/r/distinct.result index b1cb70fa43c..99d98d2a9bc 100644 --- a/mysql-test/r/distinct.result +++ b/mysql-test/r/distinct.result @@ -173,9 +173,9 @@ INSERT INTO t2 values (1),(2),(3); INSERT INTO t3 VALUES (1,'1'),(2,'2'),(1,'1'),(2,'2'); explain SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 4 Using temporary -1 SIMPLE t3 ref a a 5 test.t1.b 2 Using where; Using index -1 SIMPLE t2 index a a 4 NULL 5 Using where; Using index; Distinct; Using join buffer +1 SIMPLE t1 ALL PRIMARY NULL NULL NULL 4 Using where; Using temporary +1 SIMPLE t3 ref a a 5 test.t1.b 2 Using index +1 SIMPLE t2 index a a 4 NULL 5 Using where; Using index; Distinct; Using join buffer (flat, BNL join) SELECT distinct t3.a FROM t3,t2,t1 WHERE t3.a=t1.b AND t1.a=t2.a; a 1 @@ -190,7 +190,7 @@ insert into t3 select * from t4; explain select distinct t1.a from t1,t3 where t1.a=t3.a; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index PRIMARY PRIMARY 4 NULL 4 Using index; Using temporary -1 SIMPLE t3 ref a a 5 test.t1.a 11 Using where; Using index; Distinct +1 SIMPLE t3 ref a a 5 test.t1.a 11 Using index; Distinct select distinct t1.a from t1,t3 where t1.a=t3.a; a 1 @@ -280,6 +280,8 @@ unique (id, idx) insert into t1 values (1,'yes'), (2,'no'); insert into t2 values (1,1); insert into t3 values (1,1); +set @save_join_cache_level=@@join_cache_level; +set join_cache_level=1; EXPLAIN SELECT DISTINCT t1.id @@ -300,11 +302,11 @@ WHERE AND ((t1.id=j_lj_t3.id AND t3_lj.id IS NULL) OR (t1.id=t3.id AND t3.idx=2)); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index id id 4 NULL 2 Using index; Using temporary -1 SIMPLE t2 index id id 8 NULL 1 Using index; Distinct; Using join buffer -1 SIMPLE t3 index id id 8 NULL 1 Using index; Distinct; Using join buffer -1 SIMPLE j_lj_t2 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer +1 SIMPLE t2 index id id 8 NULL 1 Using index; Distinct; Using join buffer (flat, BNL join) +1 SIMPLE t3 index id id 8 NULL 1 Using index; Distinct; Using join buffer (flat, BNL join) +1 SIMPLE j_lj_t2 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer (flat, BNL join) 1 SIMPLE t2_lj ref id id 4 test.j_lj_t2.id 1 Using where; Using index; Distinct -1 SIMPLE j_lj_t3 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer +1 SIMPLE j_lj_t3 index id id 4 NULL 2 Using where; Using index; Distinct; Using join buffer (flat, BNL join) 1 SIMPLE t3_lj ref id id 4 test.j_lj_t3.id 1 Using where; Using index; Distinct SELECT DISTINCT t1.id @@ -326,6 +328,7 @@ AND ((t1.id=j_lj_t3.id AND t3_lj.id IS NULL) OR (t1.id=t3.id AND t3.idx=2)); id 2 drop table t1,t2,t3; +set join_cache_level=@save_join_cache_level; create table t1 (a int not null, b int not null, t time); insert into t1 values (1,1,"00:06:15"),(1,2,"00:06:15"),(1,2,"00:30:15"),(1,3,"00:06:15"),(1,3,"00:30:15"); select a,sec_to_time(sum(time_to_sec(t))) from t1 group by a,b; @@ -515,7 +518,7 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT DISTINCT t1_1.a, t1_1.b FROM t1 t1_1, t1 t1_2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1_1 ALL NULL NULL NULL NULL 3 Using temporary -1 SIMPLE t1_2 index NULL PRIMARY 4 NULL 3 Using index; Distinct; Using join buffer +1 SIMPLE t1_2 index NULL PRIMARY 4 NULL 3 Using index; Distinct; Using join buffer (flat, BNL join) EXPLAIN SELECT DISTINCT t1_1.a, t1_1.b FROM t1 t1_1, t1 t1_2 WHERE t1_1.a = t1_2.a; id select_type table type possible_keys key key_len ref rows Extra @@ -794,3 +797,53 @@ DROP TABLE t1; SET @@sort_buffer_size = @old_sort_buffer_size; SET @@max_heap_table_size = @old_max_heap_table_size; End of 5.1 tests +create table t1 (a varchar(100)); +insert t1 values ('2010-10-10'), ('20101010'); +select * from t1 where a = DATE('2010-10-10'); +a +2010-10-10 +20101010 +select distinct a from t1 where a = DATE('2010-10-10'); +a +2010-10-10 +20101010 +explain select distinct a from t1 where a = DATE('2010-10-10'); +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where; Using temporary +drop table t1; +# date = string +create table t1 (a date); +insert t1 values ('2010-10-10'), ('20101010'); +explain select distinct a from t1 where a = '2010-10-10'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +drop table t1; +# double = string +create table t1 (a double); +insert t1 values (2), (2); +explain select distinct a from t1 where a = '2'; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +# double = int +explain select distinct a from t1 where a = 2; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where +# string = double +alter table t1 modify a varchar(100); +explain select distinct a from t1 where a = 2e0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 Using where; Using temporary +drop table t1; +create table t1 (f1 varchar(40)); +insert into t1 values ('2010-10-10 00:00:00.0001'),('2010-10-10 00:00:00.0002'),('2010-10-10 00:00:00.0003'); +select time(f1) from t1 ; +time(f1) +00:00:00.000100 +00:00:00.000200 +00:00:00.000300 +select distinct time(f1) from t1 ; +time(f1) +00:00:00.000100 +00:00:00.000200 +00:00:00.000300 +drop table t1; |