diff options
Diffstat (limited to 'mysql-test/main/select_pkeycache.result')
| -rw-r--r-- | mysql-test/main/select_pkeycache.result | 72 |
1 files changed, 57 insertions, 15 deletions
diff --git a/mysql-test/main/select_pkeycache.result b/mysql-test/main/select_pkeycache.result index 675601df08c..af65ca169d6 100644 --- a/mysql-test/main/select_pkeycache.result +++ b/mysql-test/main/select_pkeycache.result @@ -603,6 +603,31 @@ explain select t3.t2nr,fld3 from t2,t3 where t2.companynr = 34 and t2.fld1=t3.t2 id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL fld1 NULL NULL NULL 1199 Using where; Using temporary; Using filesort 1 SIMPLE t3 eq_ref PRIMARY PRIMARY 4 test.t2.fld1 1 Using where; Using index +# +# Some test with ORDER BY and limit +# +explain select count(*) from t3 as t1,t3 where t1.period=t3.period order by t3.period; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 index period period 4 NULL 41810 Using index +1 SIMPLE t3 ref period period 4 test.t1.period 4181 Using index +explain select sum(t1.price+t3.price) from t3 as t1,t3 where t1.period=t3.period order by t3.period; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL period NULL NULL NULL 41810 +1 SIMPLE t3 ALL period NULL NULL NULL 41810 Using where; Using join buffer (flat, BNL join) +explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using temporary; Using filesort +1 SIMPLE t3 ALL period NULL NULL NULL 41810 Using where; Using join buffer (flat, BNL join) +explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period limit 10; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t3 ALL period NULL NULL NULL 41810 Using temporary; Using filesort +1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using where; Using join buffer (flat, BNL join) +explain select * from t3 as t1,t3 where t1.period=t3.period order by t1.period limit 10; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using temporary; Using filesort +1 SIMPLE t3 ALL period NULL NULL NULL 41810 Using where; Using join buffer (flat, BNL join) +set @save_join_cache_level=@@join_cache_level; +set @@join_cache_level=0; explain select * from t3 as t1,t3 where t1.period=t3.period order by t3.period; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 ALL period NULL NULL NULL 41810 Using filesort @@ -615,6 +640,10 @@ explain select * from t3 as t1,t3 where t1.period=t3.period order by t1.period l id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 index period period 4 NULL 1 1 SIMPLE t3 ref period period 4 test.t1.period 4181 +set @@join_cache_level=@save_join_cache_level; +# +# Search with a constant table. +# select period from t1; period 9410 @@ -1378,18 +1407,28 @@ explain select companynr,companyname from t4 left join t2 using (companynr) wher id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Impossible WHERE delete from t2 where fld1=999999; +# +# Test left join optimization +# +set @save_join_cache_level=@@join_cache_level; +set @@join_cache_level=0; explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0; id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where -1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr < 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where 1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 and t4.companynr > 0; id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where -1 SIMPLE t4 eq_ref PRIMARY PRIMARY 1 test.t2.companynr 1 +set @@join_cache_level=@save_join_cache_level; +explain select t2.companynr,companyname from t4 left join t2 using (companynr) where t2.companynr > 0 or t2.companynr < 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where; Using join buffer (flat, BNL join) explain select companynr,companyname from t4 left join t2 using (companynr) where companynr > 0; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL PRIMARY NULL NULL NULL 12 Using where @@ -1426,6 +1465,9 @@ explain select companynr,companyname from t4 left join t2 using (companynr) wher id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t4 ALL NULL NULL NULL NULL 12 Using where 1 SIMPLE t2 ALL NULL NULL NULL NULL 1199 Using where +# +# Joins with forms. +# select distinct t2.companynr,t4.companynr from t2,t4 where t2.companynr=t4.companynr+1; companynr companynr 37 36 @@ -2364,16 +2406,16 @@ insert into t1 values (1,2), (2,2), (3,2), (4,2); insert into t2 values (1,3), (2,3), (3,4), (4,4); explain select * from t1 left join t2 on a=c where d in (4); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref c,d d 5 const 2 -1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ref c,d d 5 const 2 Using where +1 SIMPLE t1 ref a a 5 test.t2.c 2 select * from t1 left join t2 on a=c where d in (4); a b c d 3 2 3 4 4 2 4 4 explain select * from t1 left join t2 on a=c where d = 4; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t2 ref c,d d 5 const 2 -1 SIMPLE t1 ALL a NULL NULL NULL 4 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t2 ref c,d d 5 const 2 Using where +1 SIMPLE t1 ref a a 5 test.t2.c 2 select * from t1 left join t2 on a=c where d = 4; a b c d 3 2 3 4 @@ -3479,7 +3521,7 @@ id select_type table type possible_keys key key_len ref rows Extra EXPLAIN SELECT a, c, d, f FROM t1,t2 WHERE a=c AND b BETWEEN 4 AND 6 AND a > 0; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 range PRIMARY,b b 5 NULL 3 Using index condition; Using where +1 SIMPLE t1 range|filter PRIMARY,b b|PRIMARY 5|4 NULL 3 (90%) Using index condition; Using where; Using rowid filter 1 SIMPLE t2 ref c c 5 test.t1.a 2 DROP TABLE t1, t2; create table t1 ( @@ -3540,7 +3582,7 @@ WHERE t1.id=2; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 1 SIMPLE t2 const idx1 NULL NULL NULL 1 -1 SIMPLE t3 ALL idx1 NULL NULL NULL 9 Using where +1 SIMPLE t3 ref idx1 idx1 5 const 4 SELECT * FROM t1 LEFT JOIN t2 ON t2.b=t1.a INNER JOIN t3 ON t3.d=t1.id WHERE t1.id=2; id a b c d e @@ -3640,7 +3682,7 @@ t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 1 SIMPLE t2 range si si 5 NULL 2 Using index condition; Using where -1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where +1 SIMPLE t3 eq_ref|filter PRIMARY,ci PRIMARY|ci 4|5 test.t2.a 1 (30%) Using where; Using rowid filter EXPLAIN SELECT t3.a FROM t1,t2,t3 WHERE t1.id = 8 AND (t2.i=t1.b OR t2.i=t1.e) AND t3.a=t2.a AND @@ -3648,7 +3690,7 @@ t3.c IN ('bb','ee'); id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 1 SIMPLE t2 range si,ai si 5 NULL 2 Using index condition; Using where -1 SIMPLE t3 eq_ref PRIMARY,ci PRIMARY 4 test.t2.a 1 Using where +1 SIMPLE t3 eq_ref|filter PRIMARY,ci PRIMARY|ci 4|5 test.t2.a 1 (30%) Using where; Using rowid filter DROP TABLE t1,t2,t3; CREATE TABLE t1 ( f1 int primary key, f2 int, f3 int, f4 int, f5 int, f6 int, checked_out int); CREATE TABLE t2 ( f11 int PRIMARY KEY ); @@ -3725,11 +3767,11 @@ COUNT(*) EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null=3 ; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index_merge idx1,idx2 idx2,idx1 4,10 NULL 1 Using intersect(idx2,idx1); Using where; Using index +1 SIMPLE t1 ref|filter idx1,idx2 idx2|idx1 4|10 const 2 (6%) Using where; Using rowid filter EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID1_with_null=3 AND ID2_with_null=3 IS NULL ; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 ref idx1,idx2 idx2 4 const 2 Using where +1 SIMPLE t1 ref|filter idx1,idx2 idx2|idx1 4|5 const 2 (27%) Using where; Using rowid filter EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null IS NULL; id select_type table type possible_keys key key_len ref rows Extra @@ -3739,7 +3781,7 @@ CREATE UNIQUE INDEX idx1 ON t1(ID1_with_null,ID2_with_null); EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID1_with_null IS NULL AND ID2_with_null=3 ; id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE t1 index_merge idx1,idx2 idx2,idx1 4,10 NULL 1 Using intersect(idx2,idx1); Using where; Using index +1 SIMPLE t1 ref|filter idx1,idx2 idx2|idx1 4|10 const 2 (7%) Using where; Using rowid filter EXPLAIN SELECT * FROM t1 WHERE ID_better=1 AND ID1_with_null=3 AND ID2_with_null IS NULL ; id select_type table type possible_keys key key_len ref rows Extra @@ -3773,7 +3815,7 @@ AND t1.ts BETWEEN t2.dt1 AND t2.dt2 AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31"; id select_type table type possible_keys key key_len ref rows Extra 1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 -1 SIMPLE t1 ALL ts NULL NULL NULL 2 Using where +1 SIMPLE t1 range ts ts 4 NULL 2 Using index condition; Using where SELECT * FROM t1 LEFT JOIN t2 ON (t1.a=t2.a) WHERE t1.a=30 AND t1.ts BETWEEN t2.dt1 AND t2.dt2 AND t1.ts BETWEEN "2006-01-01" AND "2006-12-31"; @@ -4039,7 +4081,7 @@ EXPLAIN SELECT COUNT(*) FROM t1 f1 INNER JOIN t1 f2 ON ( f1.b=f2.b AND f1.a<f2.a ) WHERE 1 AND f1.b NOT IN (100,2232,3343,51111); id select_type table type possible_keys key key_len ref rows Extra -1 SIMPLE f1 index inx inx 10 NULL 7 Using where; Using index +1 SIMPLE f1 range inx inx 5 NULL 7 Using where; Using index 1 SIMPLE f2 ref inx inx 5 test.f1.b 1 Using where; Using index DROP TABLE t1; CREATE TABLE t1 (c1 INT, c2 INT); |