diff options
Diffstat (limited to 'mysql-test/main/derived_view.result')
| -rw-r--r-- | mysql-test/main/derived_view.result | 2981 |
1 files changed, 2981 insertions, 0 deletions
diff --git a/mysql-test/main/derived_view.result b/mysql-test/main/derived_view.result new file mode 100644 index 00000000000..85e56ff176e --- /dev/null +++ b/mysql-test/main/derived_view.result @@ -0,0 +1,2981 @@ +drop table if exists t1,t2; +drop view if exists v1,v2,v3,v4; +set @exit_optimizer_switch=@@optimizer_switch; +set @exit_join_cache_level=@@join_cache_level; +set optimizer_switch='derived_merge=on,derived_with_keys=on'; +set @save_optimizer_switch=@@optimizer_switch; +set join_cache_level=1; +create table t1(f1 int, f11 int); +create table t2(f2 int, f22 int); +insert into t1 values(1,1),(2,2),(3,3),(5,5),(9,9),(7,7); +insert into t1 values(17,17),(13,13),(11,11),(15,15),(19,19); +insert into t2 values(1,1),(3,3),(2,2),(4,4),(8,8),(6,6); +insert into t2 values(12,12),(14,14),(10,10),(18,18),(16,16); +Tests: +for merged derived tables +explain for simple derived +explain select * from (select * from t1) tt; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 +select * from (select * from t1) tt; +f1 f11 +1 1 +2 2 +3 3 +5 5 +9 9 +7 7 +17 17 +13 13 +11 11 +15 15 +19 19 +explain for multitable derived +explain extended select * from (select * from t1 join t2 on f1=f2) tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 11 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`f2` = `test`.`t1`.`f1` +select * from (select * from t1 join t2 on f1=f2) tt; +f1 f11 f2 f22 +1 1 1 1 +3 3 3 3 +2 2 2 2 +explain for derived with where +explain extended +select * from (select * from t1 where f1 in (2,3)) tt where f11=2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f11` = 2 and `test`.`t1`.`f1` in (2,3) +select * from (select * from t1 where f1 in (2,3)) tt where f11=2; +f1 f11 +2 2 +join of derived +explain extended +select * from (select * from t1 where f1 in (2,3)) tt join +(select * from t1 where f1 in (1,2)) aa on tt.f1=aa.f1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` join `test`.`t1` where `test`.`t1`.`f1` = `test`.`t1`.`f1` and `test`.`t1`.`f1` in (1,2) and `test`.`t1`.`f1` in (2,3) +select * from (select * from t1 where f1 in (2,3)) tt join +(select * from t1 where f1 in (1,2)) aa on tt.f1=aa.f1; +f1 f11 f1 f11 +2 2 2 2 +flush status; +explain extended +select * from (select * from t1 where f1 in (2,3)) tt where f11=2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f11` = 2 and `test`.`t1`.`f1` in (2,3) +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_last 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 0 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 0 +flush status; +select * from (select * from t1 where f1 in (2,3)) tt where f11=2; +f1 f11 +2 2 +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_last 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 0 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 12 +for merged views +create view v1 as select * from t1; +create view v2 as select * from t1 join t2 on f1=f2; +create view v3 as select * from t1 where f1 in (2,3); +create view v4 as select * from t2 where f2 in (2,3); +explain for simple views +explain extended select * from v1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` +select * from v1; +f1 f11 +1 1 +2 2 +3 3 +5 5 +9 9 +7 7 +17 17 +13 13 +11 11 +15 15 +19 19 +explain for multitable views +explain extended select * from v2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 11 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`f2` = `test`.`t1`.`f1` +select * from v2; +f1 f11 f2 f22 +1 1 1 1 +3 3 3 3 +2 2 2 2 +explain for views with where +explain extended select * from v3 where f11 in (1,3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f11` in (1,3) and `test`.`t1`.`f1` in (2,3) +select * from v3 where f11 in (1,3); +f1 f11 +3 3 +explain for joined views +explain extended +select * from v3 join v4 on f1=f2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 11 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`f2` = `test`.`t1`.`f1` and `test`.`t1`.`f1` in (2,3) and `test`.`t1`.`f1` in (2,3) +select * from v3 join v4 on f1=f2; +f1 f11 f2 f22 +3 3 3 3 +2 2 2 2 +flush status; +explain extended select * from v4 where f2 in (1,3); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 11 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` where `test`.`t2`.`f2` in (1,3) and `test`.`t2`.`f2` in (2,3) +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_last 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 0 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 0 +flush status; +select * from v4 where f2 in (1,3); +f2 f22 +3 3 +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_last 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 0 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 12 +for materialized derived tables +explain for simple derived +explain extended select * from (select * from t1 group by f1) tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 100.00 +2 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#2 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` group by `test`.`t1`.`f1`) `tt` +select * from (select * from t1 having f1=f1) tt; +f1 f11 +1 1 +2 2 +3 3 +5 5 +9 9 +7 7 +17 17 +13 13 +11 11 +15 15 +19 19 +explain showing created indexes +explain extended +select * from t1 join (select * from t2 group by f2) tt on f1=f2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 11 100.00 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t1.f1 2 100.00 +2 DERIVED t2 ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`tt`.`f2` AS `f2`,`tt`.`f22` AS `f22` from `test`.`t1` join (/* select#2 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` group by `test`.`t2`.`f2`) `tt` where `tt`.`f2` = `test`.`t1`.`f1` +select * from t1 join (select * from t2 group by f2) tt on f1=f2; +f1 f11 f2 f22 +1 1 1 1 +2 2 2 2 +3 3 3 3 +explain showing late materialization +flush status; +explain select * from t1 join (select * from t2 group by f2) tt on f1=f2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 11 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t1.f1 2 +2 DERIVED t2 ALL NULL NULL NULL NULL 11 Using temporary; Using filesort +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_last 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 0 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 0 +flush status; +select * from t1 join (select * from t2 group by f2) tt on f1=f2; +f1 f11 f2 f22 +1 1 1 1 +2 2 2 2 +3 3 3 3 +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 11 +Handler_read_last 0 +Handler_read_next 3 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 11 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 36 +for materialized views +drop view v1,v2,v3; +create view v1 as select * from t1 group by f1; +create view v2 as select * from t2 group by f2; +create view v3 as select t1.f1,t1.f11 from t1 join t1 as t11 where t1.f1=t11.f1 +having t1.f1<100; +explain for simple derived +explain extended select * from v1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 100.00 +2 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`v1` +select * from v1; +f1 f11 +1 1 +2 2 +3 3 +5 5 +7 7 +9 9 +11 11 +13 13 +15 15 +17 17 +19 19 +explain showing created indexes +explain extended select * from t1 join v2 on f1=f2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 11 100.00 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t1.f1 2 100.00 +2 DERIVED t2 ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`v2`.`f2` AS `f2`,`v2`.`f22` AS `f22` from `test`.`t1` join `test`.`v2` where `v2`.`f2` = `test`.`t1`.`f1` +select * from t1 join v2 on f1=f2; +f1 f11 f2 f22 +1 1 1 1 +2 2 2 2 +3 3 3 3 +explain extended +select * from t1,v3 as v31,v3 where t1.f1=v31.f1 and t1.f1=v3.f1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 11 100.00 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t1.f1 10 100.00 +1 PRIMARY <derived3> ref key0 key0 5 test.t1.f1 10 100.00 +3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 +3 DERIVED t11 ALL NULL NULL NULL NULL 11 100.00 Using where; Using join buffer (flat, BNL join) +2 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 +2 DERIVED t11 ALL NULL NULL NULL NULL 11 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 /* select#1 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`v31`.`f1` AS `f1`,`v31`.`f11` AS `f11`,`v3`.`f1` AS `f1`,`v3`.`f11` AS `f11` from `test`.`t1` join `test`.`v3` `v31` join `test`.`v3` where `v31`.`f1` = `test`.`t1`.`f1` and `v3`.`f1` = `test`.`t1`.`f1` +flush status; +select * from t1,v3 as v31,v3 where t1.f1=v31.f1 and t1.f1=v3.f1; +f1 f11 f1 f11 f1 f11 +1 1 1 1 1 1 +2 2 2 2 2 2 +3 3 3 3 3 3 +5 5 5 5 5 5 +9 9 9 9 9 9 +7 7 7 7 7 7 +17 17 17 17 17 17 +13 13 13 13 13 13 +11 11 11 11 11 11 +15 15 15 15 15 15 +19 19 19 19 19 19 +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 22 +Handler_read_last 0 +Handler_read_next 22 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 0 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 60 +explain showing late materialization +flush status; +explain select * from t1 join v2 on f1=f2; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 11 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t1.f1 2 +2 DERIVED t2 ALL NULL NULL NULL NULL 11 Using temporary; Using filesort +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 0 +Handler_read_last 0 +Handler_read_next 0 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 0 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 0 +flush status; +select * from t1 join v2 on f1=f2; +f1 f11 f2 f22 +1 1 1 1 +2 2 2 2 +3 3 3 3 +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 11 +Handler_read_last 0 +Handler_read_next 3 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 11 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 36 +explain extended select * from v1 join v4 on f1=f2; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 11 100.00 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t2.f2 2 100.00 +2 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11`,`test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`v1` join `test`.`t2` where `v1`.`f1` = `test`.`t2`.`f2` and `test`.`t2`.`f2` in (2,3) +explain format=json select * from v1 join v4 on f1=f2; +EXPLAIN +{ + "query_block": { + "select_id": 1, + "table": { + "table_name": "t2", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t2.f2 in (2,3) and t2.f2 is not null" + }, + "table": { + "table_name": "<derived2>", + "access_type": "ref", + "possible_keys": ["key0"], + "key": "key0", + "key_length": "5", + "used_key_parts": ["f1"], + "ref": ["test.t2.f2"], + "rows": 2, + "filtered": 100, + "materialized": { + "query_block": { + "select_id": 2, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 in (2,3)" + } + } + } + } + } + } + } +} +select * from v1 join v4 on f1=f2; +f1 f11 f2 f22 +3 3 3 3 +2 2 2 2 +merged derived in merged derived +explain extended select * from (select * from +(select * from t1 where f1 < 7) tt where f1 > 2) zz; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f1` > 2 and `test`.`t1`.`f1` < 7 +select * from (select * from +(select * from t1 where f1 < 7) tt where f1 > 2) zz; +f1 f11 +3 3 +5 5 +materialized derived in merged derived +explain extended select * from (select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2) zz; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where +3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f1` < 7 and `test`.`t1`.`f1` > 2 group by `test`.`t1`.`f1`) `tt` where `tt`.`f1` > 2 +select * from (select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2) zz; +f1 f11 +3 3 +5 5 +merged derived in materialized derived +explain extended select * from (select * from +(select * from t1 where f1 < 7) tt where f1 > 2 group by f1) zz; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 100.00 +2 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `zz`.`f1` AS `f1`,`zz`.`f11` AS `f11` from (/* select#2 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f1` > 2 and `test`.`t1`.`f1` < 7 group by `test`.`t1`.`f1`) `zz` +select * from (select * from +(select * from t1 where f1 < 7) tt where f1 > 2 group by f1) zz; +f1 f11 +3 3 +5 5 +materialized derived in materialized derived +explain extended select * from (select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) zz; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 100.00 +2 DERIVED <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `zz`.`f1` AS `f1`,`zz`.`f11` AS `f11` from (/* select#2 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f1` < 7 and `test`.`t1`.`f1` > 2 group by `test`.`t1`.`f1`) `tt` where `tt`.`f1` > 2 group by `tt`.`f1`) `zz` +explain format=json select * from (select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) zz; +EXPLAIN +{ + "query_block": { + "select_id": 1, + "table": { + "table_name": "<derived2>", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "materialized": { + "query_block": { + "select_id": 2, + "filesort": { + "sort_key": "tt.f1", + "temporary_table": { + "table": { + "table_name": "<derived3>", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "tt.f1 > 2", + "materialized": { + "query_block": { + "select_id": 3, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 < 7 and t1.f1 > 2" + } + } + } + } + } + } + } + } + } + } + } + } +} +select * from (select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) zz; +f1 f11 +3 3 +5 5 +mat in merged derived join mat in merged derived +explain extended select * from +(select * from (select * from t1 where f1 < 7 group by f1) tt where f1 > 2) x +join +(select * from (select * from t1 where f1 < 7 group by f1) tt where f1 > 2) z +on x.f1 = z.f1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where +1 PRIMARY <derived5> ref key0 key0 5 tt.f1 2 100.00 +5 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11`,`tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f1` < 7 and `test`.`t1`.`f1` > 2 and `test`.`t1`.`f1` > 2 group by `test`.`t1`.`f1`) `tt` join (/* select#5 */ select `t1`.`f1` AS `f1`,`t1`.`f11` AS `f11` from `test`.`t1` where `t1`.`f1` < 7 and `t1`.`f1` > 2 and `t1`.`f1` > 2 group by `t1`.`f1`) `tt` where `tt`.`f1` = `tt`.`f1` and `tt`.`f1` > 2 and `tt`.`f1` > 2 +explain format=json select * from +(select * from (select * from t1 where f1 < 7 group by f1) tt where f1 > 2) x +join +(select * from (select * from t1 where f1 < 7 group by f1) tt where f1 > 2) z +on x.f1 = z.f1; +EXPLAIN +{ + "query_block": { + "select_id": 1, + "table": { + "table_name": "<derived3>", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "tt.f1 > 2 and tt.f1 > 2 and tt.f1 is not null", + "materialized": { + "query_block": { + "select_id": 3, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 < 7 and t1.f1 > 2 and t1.f1 > 2" + } + } + } + } + } + }, + "table": { + "table_name": "<derived5>", + "access_type": "ref", + "possible_keys": ["key0"], + "key": "key0", + "key_length": "5", + "used_key_parts": ["f1"], + "ref": ["tt.f1"], + "rows": 2, + "filtered": 100, + "materialized": { + "query_block": { + "select_id": 5, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 < 7 and t1.f1 > 2 and t1.f1 > 2" + } + } + } + } + } + } + } +} +flush status; +select * from +(select * from (select * from t1 where f1 < 7 group by f1) tt where f1 > 2) x +join +(select * from (select * from t1 where f1 < 7 group by f1) tt where f1 > 2) z +on x.f1 = z.f1; +f1 f11 f1 f11 +3 3 3 3 +5 5 5 5 +show status like 'Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 2 +Handler_read_last 0 +Handler_read_next 2 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 4 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 33 +flush status; +merged in merged derived join merged in merged derived +explain extended select * from +(select * from +(select * from t1 where f1 < 7 ) tt where f1 > 2 ) x +join +(select * from +(select * from t1 where f1 < 7 ) tt where f1 > 2 ) z +on x.f1 = z.f1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where +1 SIMPLE t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11`,`t1`.`f1` AS `f1`,`t1`.`f11` AS `f11` from `test`.`t1` join `test`.`t1` where `t1`.`f1` = `test`.`t1`.`f1` and `test`.`t1`.`f1` > 2 and `test`.`t1`.`f1` < 7 and `test`.`t1`.`f1` > 2 and `test`.`t1`.`f1` < 7 +select * from +(select * from +(select * from t1 where f1 < 7 ) tt where f1 > 2 ) x +join +(select * from +(select * from t1 where f1 < 7 ) tt where f1 > 2 ) z +on x.f1 = z.f1; +f1 f11 f1 f11 +3 3 3 3 +5 5 5 5 +materialized in materialized derived join +materialized in materialized derived +explain extended select * from +(select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) x +join +(select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) z +on x.f1 = z.f1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 100.00 Using where +1 PRIMARY <derived4> ref key0 key0 5 x.f1 2 100.00 +4 DERIVED <derived5> ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +5 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +2 DERIVED <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `x`.`f1` AS `f1`,`x`.`f11` AS `f11`,`z`.`f1` AS `f1`,`z`.`f11` AS `f11` from (/* select#2 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#3 */ select `test`.`t1`.`f1` AS `f1`,`test`.`t1`.`f11` AS `f11` from `test`.`t1` where `test`.`t1`.`f1` < 7 and `test`.`t1`.`f1` > 2 group by `test`.`t1`.`f1`) `tt` where `tt`.`f1` > 2 group by `tt`.`f1`) `x` join (/* select#4 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#5 */ select `t1`.`f1` AS `f1`,`t1`.`f11` AS `f11` from `test`.`t1` where `t1`.`f1` < 7 and `t1`.`f1` > 2 group by `t1`.`f1`) `tt` where `tt`.`f1` > 2 group by `tt`.`f1`) `z` where `z`.`f1` = `x`.`f1` +explain format=json select * from +(select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) x +join +(select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) z +on x.f1 = z.f1; +EXPLAIN +{ + "query_block": { + "select_id": 1, + "table": { + "table_name": "<derived2>", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "x.f1 is not null", + "materialized": { + "query_block": { + "select_id": 2, + "filesort": { + "sort_key": "tt.f1", + "temporary_table": { + "table": { + "table_name": "<derived3>", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "tt.f1 > 2", + "materialized": { + "query_block": { + "select_id": 3, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 < 7 and t1.f1 > 2" + } + } + } + } + } + } + } + } + } + } + }, + "table": { + "table_name": "<derived4>", + "access_type": "ref", + "possible_keys": ["key0"], + "key": "key0", + "key_length": "5", + "used_key_parts": ["f1"], + "ref": ["x.f1"], + "rows": 2, + "filtered": 100, + "materialized": { + "query_block": { + "select_id": 4, + "filesort": { + "sort_key": "tt.f1", + "temporary_table": { + "table": { + "table_name": "<derived5>", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "tt.f1 > 2", + "materialized": { + "query_block": { + "select_id": 5, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 < 7 and t1.f1 > 2" + } + } + } + } + } + } + } + } + } + } + } + } +} +select * from +(select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) x +join +(select * from +(select * from t1 where f1 < 7 group by f1) tt where f1 > 2 group by f1) z +on x.f1 = z.f1; +f1 f11 f1 f11 +3 3 3 3 +5 5 5 5 +merged view in materialized derived +explain extended +select * from (select * from v4 group by 1) tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 100.00 +2 DERIVED t2 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `tt`.`f2` AS `f2`,`tt`.`f22` AS `f22` from (/* select#2 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` where `test`.`t2`.`f2` in (2,3) group by 1) `tt` +select * from (select * from v4 group by 1) tt; +f2 f22 +2 2 +3 3 +materialized view in merged derived +explain extended +select * from ( select * from v1 where f1 < 7) tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived3> ALL NULL NULL NULL NULL 11 100.00 Using where +3 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`v1` where `v1`.`f1` < 7 +explain format=json +select * from ( select * from v1 where f1 < 7) tt; +EXPLAIN +{ + "query_block": { + "select_id": 1, + "table": { + "table_name": "<derived3>", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "v1.f1 < 7", + "materialized": { + "query_block": { + "select_id": 3, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 < 7" + } + } + } + } + } + } + } +} +select * from ( select * from v1 where f1 < 7) tt; +f1 f11 +1 1 +2 2 +3 3 +5 5 +merged view in a merged view in a merged derived +create view v6 as select * from v4 where f2 < 7; +explain extended select * from (select * from v6) tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 11 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22` from `test`.`t2` where `test`.`t2`.`f2` < 7 and `test`.`t2`.`f2` in (2,3) +select * from (select * from v6) tt; +f2 f22 +3 3 +2 2 +materialized view in a merged view in a materialized derived +create view v7 as select * from v1; +explain extended select * from (select * from v7 group by 1) tt; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 100.00 +2 DERIVED <derived4> ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort +4 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `tt`.`f1` AS `f1`,`tt`.`f11` AS `f11` from (/* select#2 */ select `v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`v1` group by 1) `tt` +select * from (select * from v7 group by 1) tt; +f1 f11 +1 1 +2 2 +3 3 +5 5 +7 7 +9 9 +11 11 +13 13 +15 15 +17 17 +19 19 +join of above two +explain extended select * from v6 join v7 on f2=f1; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t2 ALL NULL NULL NULL NULL 11 100.00 Using where +1 PRIMARY <derived5> ref key0 key0 5 test.t2.f2 2 100.00 +5 DERIVED t1 ALL NULL NULL NULL NULL 11 100.00 Using where; Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `test`.`t2`.`f2` AS `f2`,`test`.`t2`.`f22` AS `f22`,`v1`.`f1` AS `f1`,`v1`.`f11` AS `f11` from `test`.`t2` join `test`.`v1` where `v1`.`f1` = `test`.`t2`.`f2` and `test`.`t2`.`f2` < 7 and `test`.`t2`.`f2` in (2,3) +explain format=json select * from v6 join v7 on f2=f1; +EXPLAIN +{ + "query_block": { + "select_id": 1, + "table": { + "table_name": "t2", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t2.f2 < 7 and t2.f2 in (2,3) and t2.f2 is not null" + }, + "table": { + "table_name": "<derived5>", + "access_type": "ref", + "possible_keys": ["key0"], + "key": "key0", + "key_length": "5", + "used_key_parts": ["f1"], + "ref": ["test.t2.f2"], + "rows": 2, + "filtered": 100, + "materialized": { + "query_block": { + "select_id": 5, + "filesort": { + "sort_key": "t1.f1", + "temporary_table": { + "table": { + "table_name": "t1", + "access_type": "ALL", + "rows": 11, + "filtered": 100, + "attached_condition": "t1.f1 < 7 and t1.f1 in (2,3)" + } + } + } + } + } + } + } +} +select * from v6 join v7 on f2=f1; +f2 f22 f1 f11 +3 3 3 3 +2 2 2 2 +test two keys +explain select * from t1 join (select * from t2 group by f2) tt on t1.f1=tt.f2 join t1 xx on tt.f22=xx.f1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 11 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t1.f1 2 +1 PRIMARY xx ALL NULL NULL NULL NULL 11 Using where; Using join buffer (flat, BNL join) +2 DERIVED t2 ALL NULL NULL NULL NULL 11 Using temporary; Using filesort +select * from t1 join (select * from t2 group by f2) tt on t1.f1=tt.f2 join t1 xx on tt.f22=xx.f1; +f1 f11 f2 f22 f1 f11 +1 1 1 1 1 1 +2 2 2 2 2 2 +3 3 3 3 3 3 +TODO: Add test with 64 tables mergeable view to test fall back to +materialization on tables > MAX_TABLES merge +drop table t1,t2; +drop view v1,v2,v3,v4,v6,v7; +# +# LP bug #794909: crash when defining possible keys for +# a materialized view/derived_table +# +CREATE TABLE t1 (f1 int) ; +INSERT INTO t1 VALUES (149), (150), (224), (29); +CREATE TABLE t2 (f1 int, KEY (f1)); +INSERT INTO t2 VALUES (149), (NULL), (224); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1; +EXPLAIN +SELECT * FROM v1 JOIN t2 ON v1.f1 = t2.f1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 index f1 f1 5 NULL 3 Using where; Using index +1 PRIMARY <derived2> ref key0 key0 5 test.t2.f1 2 +2 DERIVED t1 ALL NULL NULL NULL NULL 4 +SELECT * FROM v1 JOIN t2 ON v1.f1 = t2.f1; +f1 f1 +149 149 +224 224 +DROP VIEW v1; +DROP TABLE t1,t2; +# +# LP bug #794890: abort failure on multi-update with view +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (20), (7); +CREATE TABLE t2 (a int); +INSERT INTO t2 VALUES (7), (9), (7); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT a FROM t1; +CREATE VIEW v2 AS SELECT t2.a FROM t2, v1 WHERE t2.a=t2.a; +UPDATE v2 SET a = 2; +SELECT * FROM t2; +a +2 +2 +2 +UPDATE t1,v2 SET t1.a = 3; +SELECT * FROM t1; +a +3 +3 +DELETE t1 FROM t1,v2; +SELECT * FROM t1; +a +DROP VIEW v1,v2; +DROP TABLE t1,t2; +# +# LP bug #802023: MIN/MAX optimization +# for mergeable derived tables and views +# +CREATE TABLE t1 (a int, b int, c varchar(32), INDEX idx(a,b)); +INSERT INTO t1 VALUES +(7, 74, 'yyyyyyy'), (9, 97, 'aaaaaaaaa'), (2, 23, 'tt'), +(5, 55, 'ddddd'), (2, 27, 'ss'), (7, 76, 'xxxxxxx'), +(7, 79, 'zzzzzzz'), (9, 92, 'bbbbbbbbb'), (2, 25, 'pp'), +(5, 53, 'eeeee'), (2, 23, 'qq'), (7, 76,'wwwwwww'), +(7, 74, 'uuuuuuu'), (9, 92, 'ccccccccc'), (2, 25, 'oo'); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT MIN(a) FROM t1 WHERE a >= 5; +MIN(a) +5 +EXPLAIN +SELECT MIN(a) FROM t1 WHERE a >= 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +SELECT MIN(a) FROM (SELECT * FROM t1) t WHERE a >= 5; +MIN(a) +5 +EXPLAIN +SELECT MIN(a) FROM(SELECT * FROM t1) t WHERE a >= 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +SELECT MIN(a) FROM v1 WHERE a >= 5; +MIN(a) +5 +EXPLAIN +SELECT MIN(a) FROM v1 WHERE a >= 5; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +SELECT MAX(b) FROM t1 WHERE a=7 AND b<75; +MAX(b) +74 +EXPLAIN +SELECT MAX(b) FROM t1 WHERE a=7 AND b<75; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +SELECT MAX(b) FROM (SELECT * FROM t1) t WHERE a=7 AND b<75; +MAX(b) +74 +EXPLAIN +SELECT MAX(b) FROM (SELECT * FROM t1) t WHERE a=7 AND b<75; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +SELECT MAX(b) FROM v1 WHERE a=7 AND b<75; +MAX(b) +74 +EXPLAIN +SELECT MAX(b) FROM v1 WHERE a=7 AND b<75; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL Select tables optimized away +DROP VIEW v1; +DROP TABLE t1; +# +# LP bug #800535: GROUP BY query with nested left join +# and a derived table in the nest +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (1), (2); +CREATE TABLE t2 (a int NOT NULL); +INSERT INTO t2 VALUES (1), (2); +CREATE TABLE t3 (a int, b int); +INSERT INTO t3 VALUES (3,3), (4,4); +EXPLAIN EXTENDED +SELECT t.a FROM t1 LEFT JOIN +(t2 t JOIN t3 ON t3.b > 5) ON t.a >= 1 +GROUP BY t.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +1 SIMPLE t ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t`.`a` AS `a` from `test`.`t1` left join (`test`.`t2` `t` join `test`.`t3`) on(`test`.`t`.`a` >= 1 and `test`.`t3`.`b` > 5) where 1 group by `test`.`t`.`a` +SELECT t.a FROM t1 LEFT JOIN +(t2 t JOIN t3 ON t3.b > 5) ON t.a >= 1 +GROUP BY t.a; +a +NULL +EXPLAIN EXTENDED +SELECT t.a FROM t1 LEFT JOIN +(( SELECT * FROM t2 ) t JOIN t3 ON t3.b > 5) ON t.a >= 1 +GROUP BY t.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(`test`.`t2`.`a` >= 1 and `test`.`t3`.`b` > 5) where 1 group by `test`.`t2`.`a` +SELECT t.a FROM t1 LEFT JOIN +(( SELECT * FROM t2 ) t JOIN t3 ON t3.b > 5) ON t.a >= 1 +GROUP BY t.a; +a +NULL +CREATE VIEW v1 AS SELECT * FROM t2; +EXPLAIN EXTENDED +SELECT t.a FROM t1 LEFT JOIN +(v1 t JOIN t3 ON t3.b > 5) ON t.a >= 1 +GROUP BY t.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 Using temporary; Using filesort +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a` from `test`.`t1` left join (`test`.`t2` join `test`.`t3`) on(`test`.`t2`.`a` >= 1 and `test`.`t3`.`b` > 5) where 1 group by `test`.`t2`.`a` +SELECT t.a FROM t1 LEFT JOIN +(v1 t JOIN t3 ON t3.b > 5) ON t.a >= 1 +GROUP BY t.a; +a +NULL +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #803410: materialized view/dt accessed by two-component key +# +CREATE TABLE t1 (a varchar(1)); +INSERT INTO t1 VALUES ('c'); +CREATE TABLE t2 (a varchar(1) , KEY (a)) ; +INSERT INTO t2 VALUES ('c'), (NULL), ('r'); +CREATE TABLE t3 (a varchar(1), b varchar(1)); +INSERT INTO t3 VALUES +('e', 'c'), ('c', 'c'), ('c', 'r'), ('g', 'a'), ('b', 'x'), ('b', 'y'), +('h', 'w'), ('d', 'z'), ('k', 'v'), ('j', 's'), ('m', 'p'), ('l', 'q'); +CREATE VIEW v1 AS SELECT a, MIN(b) AS b FROM t3 GROUP BY a; +EXPLAIN +SELECT * FROM t1, t2, v1 WHERE t2.a=t1.a AND t2.a=v1.a AND t2.a=v1.b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +1 PRIMARY t2 ref a a 4 const 1 Using index +1 PRIMARY <derived2> ref key0 key0 8 const,const 1 +2 DERIVED t3 ALL NULL NULL NULL NULL 12 Using temporary; Using filesort +SELECT * FROM t1, t2, v1 WHERE t2.a=t1.a AND t2.a=v1.a AND t2.a=v1.b; +a a a b +c c c c +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #802845: select from derived table with limit 0 +# +SELECT * FROM (SELECT 1 LIMIT 0) t; +1 +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (7), (1), (3); +SELECT * FROM (SELECT * FROM t1 LIMIT 0) t; +a +DROP TABLE t1; +# +# LP bug #803851: materialized view + IN->EXISTS +# +SET SESSION optimizer_switch='semijoin=off,derived_with_keys=on,materialization=off'; +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (2,2), (3,3), (1,1); +CREATE TABLE t2 (a int); +INSERT INTO t2 VALUES (1), (2), (1); +CREATE TABLE t3 (a int); +INSERT INTO t3 VALUES (3), (1), (2), (1); +CREATE VIEW v1 AS SELECT a, MAX(b) AS b FROM t1 GROUP BY a; +EXPLAIN EXTENDED +SELECT * FROM t3 +WHERE t3.a IN (SELECT v1.a FROM v1, t2 WHERE t2.a = v1.b); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 4 100.00 Using where +2 DEPENDENT SUBQUERY <derived3> ref key1 key1 5 func 2 100.00 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where; Using join buffer (flat, BNL join) +3 DERIVED t1 ALL NULL NULL NULL NULL 3 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `test`.`t3`.`a` AS `a` from `test`.`t3` where <expr_cache><`test`.`t3`.`a`>(<in_optimizer>(`test`.`t3`.`a`,<exists>(/* select#2 */ select `v1`.`a` from `test`.`v1` join `test`.`t2` where `test`.`t2`.`a` = `v1`.`b` and <cache>(`test`.`t3`.`a`) = `v1`.`a`))) +SELECT * FROM t3 +WHERE t3.a IN (SELECT v1.a FROM v1, t2 WHERE t2.a = v1.b); +a +1 +2 +1 +SET SESSION optimizer_switch=@save_optimizer_switch; +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #804515: materialized derived + ORDER BY +# +CREATE TABLE t1 (f1 varchar(1), f2 varchar(1), KEY (f2)); +INSERT INTO t1 VALUES +('r','x'), ('x','d'), ('x','r'), ('r','f'), ('x','x'); +CREATE TABLE t2 (f1 varchar(1), f2 varchar(1)); +INSERT INTO t2 VALUES ('s','x'); +CREATE TABLE t3 (f1 varchar(1), f2 varchar(1), KEY (f2)); +INSERT INTO t3 VALUES +(NULL,'x'), (NULL,'f'), ('t','p'), (NULL,'j'), ('g','c'); +CREATE TABLE t4 (f1 int, f2 varchar(1), KEY (f2,f1)) ; +INSERT INTO t4 VALUES (1,'x'), (5,'r'); +EXPLAIN +SELECT t.f1 AS f +FROM (SELECT DISTINCT t1.* FROM t1,t2 WHERE t2.f2 = t1.f2) t,t3,t4 +WHERE t4.f2 = t3.f2 AND t4.f2 = t.f1 ORDER BY f; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using where; Using filesort +1 PRIMARY t4 ref f2 f2 4 t.f1 1 Using index +1 PRIMARY t3 ref f2 f2 4 t.f1 2 Using index +2 DERIVED t2 system NULL NULL NULL NULL 1 Using temporary +2 DERIVED t1 ref f2 f2 4 const 2 Using where +SELECT t.f1 AS f +FROM (SELECT DISTINCT t1.* FROM t1,t2 WHERE t2.f2 = t1.f2) t,t3,t4 +WHERE t4.f2 = t3.f2 AND t4.f2 = t.f1 ORDER BY f; +f +x +DROP TABLE t1,t2,t3,t4; +# +# LP bug #806431: join over materialized derived with key +# +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (0,0),(3,0),(1,0); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT a,b FROM t1 ; +SET SESSION optimizer_switch='derived_with_keys=off'; +SELECT * FROM t1 AS t JOIN v1 AS v WHERE t.a = v.b AND t.b = v.b; +a b a b +0 0 0 0 +0 0 3 0 +0 0 1 0 +SET SESSION optimizer_switch='derived_with_keys=on'; +EXPLAIN +SELECT * FROM t1 AS t JOIN v1 AS v WHERE t.a = v.b AND t.b = v.b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t ALL NULL NULL NULL NULL 3 Using where +1 PRIMARY <derived2> ref key0 key0 5 test.t.a 2 +2 DERIVED t1 ALL NULL NULL NULL NULL 3 +SELECT * FROM t1 AS t JOIN v1 AS v WHERE t.a = v.b AND t.b = v.b; +a b a b +0 0 1 0 +0 0 3 0 +0 0 0 0 +SET SESSION optimizer_switch=@save_optimizer_switch; +DROP VIEW v1; +DROP TABLE t1; +# +# LP bug #806477: left join over merged join with +# where condition containing f=f +# +CREATE TABLE t1 (a int NOT NULL); +INSERT INTO t1 VALUES (1), (50), (0); +CREATE TABLE t2 (a int); +CREATE TABLE t3 (a int, b int); +INSERT INTO t3 VALUES (76,2), (1,NULL); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT t3.b, v1.a +FROM t3 LEFT JOIN (t2, v1) ON t3.a <> 0 +WHERE v1.a = v1.a OR t3.b <> 0; +b a +2 NULL +EXPLAIN EXTENDED +SELECT t3.b, v1.a +FROM t3 LEFT JOIN (t2, v1) ON t3.a <> 0 +WHERE v1.a = v1.a OR t3.b <> 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 0 0.00 Using where +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 select `test`.`t3`.`b` AS `b`,`test`.`t1`.`a` AS `a` from `test`.`t3` left join (`test`.`t2` join `test`.`t1`) on(`test`.`t3`.`a` <> 0) where `test`.`t1`.`a` = `test`.`t1`.`a` or `test`.`t3`.`b` <> 0 +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #806510: subquery with outer reference +# to a derived_table/view +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (4), (NULL); +CREATE TABLE t2 (a int) ; +INSERT INTO t2 VALUES (8), (0); +CREATE TABLE t3 (a int, b int) ; +INSERT INTO t3 VALUES (7,8); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT * FROM t1 t +WHERE EXISTS (SELECT t3.a FROM t3, t2 +WHERE t2.a = t3.b AND t.a != 0); +a +4 +EXPLAIN +SELECT * FROM t1 t +WHERE EXISTS (SELECT t3.a FROM t3, t2 +WHERE t2.a = t3.b AND t.a != 0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t ALL NULL NULL NULL NULL 2 Using where +2 DEPENDENT SUBQUERY t3 system NULL NULL NULL NULL 1 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM (SELECT * FROM t1) t +WHERE EXISTS (SELECT t3.a FROM t3, t2 +WHERE t2.a = t3.b AND t.a != 0); +a +4 +EXPLAIN +SELECT * FROM (SELECT * FROM t1) t +WHERE EXISTS (SELECT t3.a FROM t3, t2 +WHERE t2.a = t3.b AND t.a != 0); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +3 DEPENDENT SUBQUERY t3 system NULL NULL NULL NULL 1 +3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM v1 t +WHERE EXISTS (SELECT t3.a FROM t3, t2 +WHERE t2.a = t3.b AND t.a != 0); +a +4 +EXPLAIN +SELECT * FROM v1 t +WHERE EXISTS (SELECT t3.a FROM t3, t2 +WHERE t2.a = t3.b AND t.a != 0); +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 DEPENDENT SUBQUERY t3 system NULL NULL NULL NULL 1 +2 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #806097: left join over a view + DISTINCT +# +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (252,6), (232,0), (174,232); +CREATE TABLE t2 (a int); +INSERT INTO t2 VALUES (232), (174); +CREATE TABLE t3 (c int); +INSERT INTO t3 VALUES (1), (2); +CREATE VIEW v1 AS SELECT t2.a FROM t3,t2; +SELECT v1.a FROM t1 LEFT JOIN v1 ON t1.b = 0; +a +NULL +232 +174 +232 +174 +NULL +SELECT DISTINCT t2.a FROM t1 LEFT JOIN (t3,t2) ON t1.b = 0; +a +NULL +232 +174 +EXPLAIN +SELECT DISTINCT t2.a FROM t1 LEFT JOIN (t3,t2) ON t1.b = 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using temporary +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +SELECT DISTINCT v1.a FROM t1 LEFT JOIN v1 ON t1.b = 0; +a +NULL +232 +174 +EXPLAIN +SELECT DISTINCT v1.a FROM t1 LEFT JOIN v1 ON t1.b = 0; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using temporary +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #806504: right join over a view/derived table +# +CREATE TABLE t1 (a int, b int) ; +INSERT INTO t1 VALUES (0,0); +CREATE TABLE t2 (a int) ; +INSERT INTO t2 VALUES (0), (0); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT * FROM t2 RIGHT JOIN (SELECT * FROM t1) AS t ON t.a != 0 +WHERE t.a IN (SELECT b FROM t1); +a a b +NULL 0 0 +EXPLAIN EXTENDED +SELECT * FROM t2 RIGHT JOIN (SELECT * FROM t1) AS t ON t.a != 0 +WHERE t.a IN (SELECT b FROM t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t2` semi join (dual) where 1 +SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0 +WHERE t.a IN (SELECT b FROM t1); +a a b +NULL 0 0 +EXPLAIN EXTENDED +SELECT * FROM t2 RIGHT JOIN v1 AS t ON t.a != 0 +WHERE t.a IN (SELECT b FROM t1); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`a` AS `a`,0 AS `a`,0 AS `b` from `test`.`t2` semi join (dual) where 1 +DROP VIEW v1; +DROP TABLE t1,t2; +# +# LP bug #809206: DISTINCT in derived table / view +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (0); +CREATE TABLE t2 (a varchar(32), b int, KEY (a)) ; +INSERT INTO t2 VALUES +('j',28), ('c',29), ('i',26), ('c',29), ('k',27), +('j',28), ('c',29), ('i',25), ('d',26), ('k',27), +('n',28), ('d',29), ('m',26), ('e',29), ('p',27), +('w',28), ('x',29), ('y',25), ('z',26), ('s',27); +CREATE TABLE t3 (a varchar(32)); +INSERT INTO t3 VALUES ('j'), ('c'); +CREATE VIEW v1 AS SELECT DISTINCT t2.b FROM t1,t2,t3 WHERE t3.a = t2.a; +SELECT DISTINCT t2.b FROM t1,t2,t3 WHERE t3.a = t2.a; +b +28 +29 +EXPLAIN +SELECT DISTINCT t2.b FROM t1,t2,t3 WHERE t3.a = t2.a; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 system NULL NULL NULL NULL 1 Using temporary +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 Using where +1 SIMPLE t2 ref a a 35 test.t3.a 2 +SELECT * FROM (SELECT DISTINCT t2.b FROM t1,t2,t3 WHERE t3.a = t2.a) t; +b +28 +29 +EXPLAIN +SELECT * FROM (SELECT DISTINCT t2.b FROM t1,t2,t3 WHERE t3.a = t2.a) t; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4 +2 DERIVED t1 system NULL NULL NULL NULL 1 Using temporary +2 DERIVED t3 ALL NULL NULL NULL NULL 2 Using where +2 DERIVED t2 ref a a 35 test.t3.a 2 +SELECT * FROM v1; +b +28 +29 +EXPLAIN +SELECT * FROM v1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 4 +2 DERIVED t1 system NULL NULL NULL NULL 1 Using temporary +2 DERIVED t3 ALL NULL NULL NULL NULL 2 Using where +2 DERIVED t2 ref a a 35 test.t3.a 2 +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #809179: right join over a derived table / view +# +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (6,5); +CREATE TABLE t2 (a int, b int); +INSERT INTO t2 VALUES (1,0); +CREATE TABLE t3 (a int, b int); +INSERT INTO t3 VALUES (6,5); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT t.a,t.b FROM t3 RIGHT JOIN (t1 AS t, t2) ON t2.b != 0 +WHERE (t.a,t.b) NOT IN (SELECT 7, 5); +a b +6 5 +EXPLAIN EXTENDED +SELECT t.a,t.b FROM t3 RIGHT JOIN (t1 AS t, t2) ON t2.b != 0 +WHERE (t.a,t.b) NOT IN (SELECT 7, 5); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t2 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 /* select#1 */ select 6 AS `a`,5 AS `b` from `test`.`t3` where 1 +SELECT t.a,t.b FROM t3 RIGHT JOIN ((SELECT * FROM t1) AS t, t2) ON t2.b != 0 +WHERE (t.a,t.b) NOT IN (SELECT 7, 5); +a b +6 5 +EXPLAIN EXTENDED +SELECT t.a,t.b FROM t3 RIGHT JOIN ((SELECT * FROM t1) AS t, t2) ON t2.b != 0 +WHERE (t.a,t.b) NOT IN (SELECT 7, 5); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t2 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 +3 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 /* select#1 */ select 6 AS `a`,5 AS `b` from `test`.`t3` where 1 +SELECT t.a,t.b FROM t3 RIGHT JOIN (v1 AS t, t2) ON t2.b != 0 +WHERE (t.a,t.b) NOT IN (SELECT 7, 5); +a b +6 5 +EXPLAIN EXTENDED +SELECT t.a,t.b FROM t3 RIGHT JOIN (v1 AS t, t2) ON t2.b != 0 +WHERE (t.a,t.b) NOT IN (SELECT 7, 5); +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t2 system NULL NULL NULL NULL 1 100.00 +1 PRIMARY t3 system NULL NULL NULL NULL 1 100.00 +2 SUBQUERY NULL NULL NULL NULL NULL NULL NULL NULL No tables used +Warnings: +Note 1003 /* select#1 */ select 6 AS `a`,5 AS `b` from `test`.`t3` where 1 +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #794901: insert into a multi-table view +# +CREATE TABLE t1 (a int); +CREATE TABLE t2 (a int); +CREATE TABLE t3 (a int); +CREATE VIEW v1 AS SELECT t1.a FROM t1,t2; +CREATE VIEW v2 AS SELECT a FROM t2 GROUP BY a; +CREATE VIEW v3 AS SELECT v1.a FROM v1,v2; +INSERT INTO v3(a) VALUES (1); +ERROR HY000: The target table v3 of the INSERT is not insertable-into +DROP VIEW v1,v2,v3; +DROP TABLE t1,t2,t3; +# +# LP bug #793448: materialized view accessed by two-component key +# +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (9,3), (2,5); +CREATE TABLE t2 (a int, b int); +INSERT INTO t2 VALUES (9,3), (3,7), (9,1), (2,5), (2,4), (3,8); +CREATE TABLE t3 (a int, b int); +INSERT INTO t3 VALUES (10,3), (9,7), (9,1), (2,4); +CREATE VIEW v1(a,b) AS SELECT a, MAX(b) FROM t2 GROUP BY a; +CREATE VIEW v2(a,b) AS SELECT a,b FROM t2 UNION SELECT a,b FROM t3; +SELECT * FROM v1; +a b +2 5 +3 8 +9 3 +SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1); +a +9 +2 +EXPLAIN +SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v1); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +1 PRIMARY <derived3> ref key0 key0 10 test.t1.a,test.t1.b 2 FirstMatch(t1) +3 DERIVED t2 ALL NULL NULL NULL NULL 6 Using temporary; Using filesort +SELECT * FROM v2; +a b +9 3 +3 7 +9 1 +2 5 +2 4 +3 8 +10 3 +9 7 +SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2); +a +9 +2 +EXPLAIN +SELECT a FROM t1 WHERE (a,b) IN (SELECT * FROM v2); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +1 PRIMARY <derived3> ref key0 key0 10 test.t1.a,test.t1.b 2 FirstMatch(t1) +3 DERIVED t2 ALL NULL NULL NULL NULL 6 +4 UNION t3 ALL NULL NULL NULL NULL 4 +NULL UNION RESULT <union3,4> ALL NULL NULL NULL NULL NULL +DROP VIEW v1,v2; +DROP TABLE t1,t2,t3; +# +# LP bug #804686: query over a derived table using a view +# with a degenerated where condition +# +CREATE TABLE t1 (a int, b int); +INSERT INTO t1 VALUES (0,0), (1,0), (0,0), (1,1), (1,0); +CREATE VIEW v1 AS SELECT a,b FROM t1; +CREATE VIEW v2 AS SELECT a, MAX(b) AS b FROM t1 GROUP BY a; +SELECT * FROM (SELECT b FROM v1 WHERE b = 0) t WHERE b<>0; +b +SELECT * FROM (SELECT b FROM v2 WHERE b = 0) t WHERE b<>0; +b +SELECT * FROM (SELECT b FROM v1 WHERE b = 0) t WHERE b; +b +SELECT * FROM (SELECT b FROM v2 WHERE b = 0) t WHERE b; +b +EXPLAIN EXTENDED +SELECT * FROM (SELECT b FROM v1 WHERE b = 0) t WHERE b; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +Warnings: +Note 1003 select `test`.`t1`.`b` AS `b` from `test`.`t1` where 0 +EXPLAIN EXTENDED +SELECT * FROM (SELECT b FROM v2 WHERE b = 0) t WHERE b; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 PRIMARY NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE +3 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `v2`.`b` AS `b` from `test`.`v2` where 0 +DROP VIEW v1,v2; +DROP TABLE t1; +# +# LP bug #819716: crash with embedded tableless materialized derived +# with a variable +# +set optimizer_switch='derived_merge=off'; +EXPLAIN +SELECT * FROM (SELECT * FROM (SELECT @b) AS t) AS s; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> system NULL NULL NULL NULL 1 +2 DERIVED <derived3> system NULL NULL NULL NULL 1 +3 DERIVED NULL NULL NULL NULL NULL NULL NULL No tables used +SELECT * FROM (SELECT * FROM (SELECT @b) AS t) AS s; +@b +NULL +set optimizer_switch='derived_merge=on'; +# +# LP bug #823826: view over join + IS NULL in WHERE +# +CREATE TABLE t1 (a int) ; +INSERT INTO t1 VALUES (1), (1); +CREATE TABLE t2 (b int) ; +INSERT INTO t2 VALUES (9), (NULL), (7); +CREATE VIEW v1 AS SELECT * FROM t1,t2; +EXPLAIN +SELECT * FROM (SELECT * FROM t1,t2) t WHERE b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) +SELECT * FROM (SELECT * FROM t1,t2) t WHERE b IS NULL; +a b +1 NULL +1 NULL +EXPLAIN +SELECT * FROM v1 WHERE b IS NULL; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 +1 SIMPLE t2 ALL NULL NULL NULL NULL 3 Using where; Using join buffer (flat, BNL join) +SELECT * FROM v1 WHERE b IS NULL; +a b +1 NULL +1 NULL +DROP VIEW v1; +DROP TABLE t1,t2; +# +# LP bug #823835: a duplicate of #823189 with derived table +# +CREATE TABLE t1 (a varchar(32)) ; +INSERT INTO t1 VALUES ('r'), ('p'); +CREATE TABLE t2 (a int NOT NULL, b varchar(32)) ; +INSERT INTO t2 VALUES (28,'j'); +CREATE TABLE t3 (a int); +INSERT INTO t3 VALUES (0), (0); +EXPLAIN EXTENDED +SELECT * FROM (SELECT * FROM t1) AS t +WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a) +WHERE t2.b < t.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 Using where +3 DEPENDENT SUBQUERY t2 system NULL NULL NULL NULL 1 100.00 +3 DEPENDENT SUBQUERY t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1276 Field or reference 't.a' of SELECT #3 was resolved in SELECT #1 +Note 1003 /* select#1 */ select `test`.`t1`.`a` AS `a` from `test`.`t1` where <in_optimizer>(1,<expr_cache><`test`.`t1`.`a`>(exists(/* select#3 */ select 28 from `test`.`t3` where 'j' < `test`.`t1`.`a`))) +SELECT * FROM (SELECT * FROM t1) AS t +WHERE EXISTS (SELECT t2.a FROM t3 RIGHT JOIN t2 ON (t3.a = t2.a) +WHERE t2.b < t.a); +a +r +p +DROP TABLE t1,t2,t3; +# +# LP bug #824463: nested outer join using a merged view +# as an inner table +# +CREATE TABLE t1 (b int, a int) ; +CREATE TABLE t2 (a int) ; +INSERT INTO t2 VALUES (5), (6); +CREATE TABLE t3 (a int , c int) ; +INSERT INTO t3 VALUES (22,1), (23,-1); +CREATE TABLE t4 (a int); +CREATE TABLE t5 (d int) ; +INSERT INTO t5 VALUES (0), (7), (3), (5); +CREATE VIEW v2 AS SELECT * FROM t2; +CREATE VIEW v3 AS SELECT * FROM t3; +EXPLAIN EXTENDED +SELECT STRAIGHT_JOIN * +FROM ( t2 AS s2 +JOIN +( t3 AS s3 +LEFT JOIN +( t4 LEFT JOIN t3 ON t4.a != 0 ) +ON s3.a != 0) +ON s2.a != 0) +JOIN t5 ON s3.c != 0 AND t5.d = 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE s2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE s3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 0 0.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t5 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select straight_join `test`.`s2`.`a` AS `a`,`test`.`s3`.`a` AS `a`,`test`.`s3`.`c` AS `c`,`test`.`t4`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c`,`test`.`t5`.`d` AS `d` from `test`.`t2` `s2` join `test`.`t3` `s3` left join (`test`.`t4` left join `test`.`t3` on(`test`.`t4`.`a` <> 0)) on(`test`.`s3`.`a` <> 0) join `test`.`t5` where `test`.`t5`.`d` = 0 and `test`.`s3`.`c` <> 0 and `test`.`s2`.`a` <> 0 +SELECT STRAIGHT_JOIN * +FROM ( t2 AS s2 +JOIN +( t3 AS s3 +LEFT JOIN +( t4 LEFT JOIN t3 ON t4.a != 0 ) +ON s3.a != 0) +ON s2.a != 0) +JOIN t5 ON s3.c != 0 AND t5.d = 0; +a a c a a c d +5 22 1 NULL NULL NULL 0 +6 22 1 NULL NULL NULL 0 +5 23 -1 NULL NULL NULL 0 +6 23 -1 NULL NULL NULL 0 +EXPLAIN EXTENDED +SELECT STRAIGHT_JOIN * +FROM t2 AS s2 , t5, +(t3 LEFT JOIN (t4 LEFT JOIN t3 AS s3 ON t4.a != 0) ON t3.a != 0) +WHERE s2.a != 0 AND t3.c != 0 AND t5.d = 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE s2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t5 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 0 0.00 Using where +1 SIMPLE s3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select straight_join `test`.`s2`.`a` AS `a`,`test`.`t5`.`d` AS `d`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c`,`test`.`t4`.`a` AS `a`,`test`.`s3`.`a` AS `a`,`test`.`s3`.`c` AS `c` from `test`.`t2` `s2` join `test`.`t5` join `test`.`t3` left join (`test`.`t4` left join `test`.`t3` `s3` on(`test`.`t4`.`a` <> 0)) on(`test`.`t3`.`a` <> 0) where `test`.`t5`.`d` = 0 and `test`.`s2`.`a` <> 0 and `test`.`t3`.`c` <> 0 +SELECT STRAIGHT_JOIN * +FROM t2 AS s2 , t5, +(t3 LEFT JOIN (t4 LEFT JOIN t3 AS s3 ON t4.a != 0) ON t3.a != 0) +WHERE s2.a != 0 AND t3.c != 0 AND t5.d = 0; +a d a c a a c +5 0 22 1 NULL NULL NULL +6 0 22 1 NULL NULL NULL +5 0 23 -1 NULL NULL NULL +6 0 23 -1 NULL NULL NULL +EXPLAIN EXTENDED +SELECT STRAIGHT_JOIN * +FROM v2 AS s2 , t5, +(t3 LEFT JOIN (t4 LEFT JOIN v3 AS s3 ON t4.a != 0) ON t3.a != 0) +WHERE s2.a != 0 AND t3.c != 0 AND t5.d = 0; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where +1 SIMPLE t5 ALL NULL NULL NULL NULL 4 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t4 ALL NULL NULL NULL NULL 0 0.00 Using where +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select straight_join `test`.`t2`.`a` AS `a`,`test`.`t5`.`d` AS `d`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c`,`test`.`t4`.`a` AS `a`,`test`.`t3`.`a` AS `a`,`test`.`t3`.`c` AS `c` from `test`.`t2` join `test`.`t5` join `test`.`t3` left join (`test`.`t4` left join (`test`.`t3`) on(`test`.`t4`.`a` <> 0)) on(`test`.`t3`.`a` <> 0) where `test`.`t5`.`d` = 0 and `test`.`t2`.`a` <> 0 and `test`.`t3`.`c` <> 0 +SELECT STRAIGHT_JOIN * +FROM v2 AS s2 , t5, +(t3 LEFT JOIN (t4 LEFT JOIN v3 AS s3 ON t4.a != 0) ON t3.a != 0) +WHERE s2.a != 0 AND t3.c != 0 AND t5.d = 0; +a d a c a a c +5 0 22 1 NULL NULL NULL +6 0 22 1 NULL NULL NULL +5 0 23 -1 NULL NULL NULL +6 0 23 -1 NULL NULL NULL +SELECT STRAIGHT_JOIN * +FROM ( ( t2 AS s2 +LEFT JOIN +( t3 AS s3 +LEFT JOIN +( t4 AS s4 JOIN t3 ON s4.a != 0) +ON s3.a != 0 ) +ON s2.a != 0) +LEFT JOIN +t1 AS s1 +ON s1.a != 0) +JOIN t5 ON s3.c != 0; +a a c a a c b a d +5 22 1 NULL NULL NULL NULL NULL 0 +6 22 1 NULL NULL NULL NULL NULL 0 +5 23 -1 NULL NULL NULL NULL NULL 0 +6 23 -1 NULL NULL NULL NULL NULL 0 +5 22 1 NULL NULL NULL NULL NULL 7 +6 22 1 NULL NULL NULL NULL NULL 7 +5 23 -1 NULL NULL NULL NULL NULL 7 +6 23 -1 NULL NULL NULL NULL NULL 7 +5 22 1 NULL NULL NULL NULL NULL 3 +6 22 1 NULL NULL NULL NULL NULL 3 +5 23 -1 NULL NULL NULL NULL NULL 3 +6 23 -1 NULL NULL NULL NULL NULL 3 +5 22 1 NULL NULL NULL NULL NULL 5 +6 22 1 NULL NULL NULL NULL NULL 5 +5 23 -1 NULL NULL NULL NULL NULL 5 +6 23 -1 NULL NULL NULL NULL NULL 5 +SELECT STRAIGHT_JOIN * +FROM ( ( v2 AS s2 +LEFT JOIN +( v3 AS s3 +LEFT JOIN +( t4 AS s4 JOIN v3 ON s4.a != 0) +ON s3.a != 0 ) +ON s2.a != 0) +LEFT JOIN +t1 AS s1 +ON s1.a != 0) +JOIN t5 ON s3.c != 0; +a a c a a c b a d +5 22 1 NULL NULL NULL NULL NULL 0 +6 22 1 NULL NULL NULL NULL NULL 0 +5 23 -1 NULL NULL NULL NULL NULL 0 +6 23 -1 NULL NULL NULL NULL NULL 0 +5 22 1 NULL NULL NULL NULL NULL 7 +6 22 1 NULL NULL NULL NULL NULL 7 +5 23 -1 NULL NULL NULL NULL NULL 7 +6 23 -1 NULL NULL NULL NULL NULL 7 +5 22 1 NULL NULL NULL NULL NULL 3 +6 22 1 NULL NULL NULL NULL NULL 3 +5 23 -1 NULL NULL NULL NULL NULL 3 +6 23 -1 NULL NULL NULL NULL NULL 3 +5 22 1 NULL NULL NULL NULL NULL 5 +6 22 1 NULL NULL NULL NULL NULL 5 +5 23 -1 NULL NULL NULL NULL NULL 5 +6 23 -1 NULL NULL NULL NULL NULL 5 +DROP VIEW v2,v3; +DROP TABLE t1,t2,t3,t4,t5; +# +# LP bug #872735: derived used in a NOT IN subquery +# +CREATE TABLE t1 (b int NOT NULL); +INSERT INTO t1 VALUES (9), (7); +CREATE TABLE t2 (a int NOT NULL) ; +INSERT INTO t2 VALUES (1), (2); +CREATE TABLE t3 ( +a int NOT NULL , c int NOT NULL, d varchar(1) NOT NULL, +KEY (c,a) , PRIMARY KEY (a) +); +INSERT INTO t3 VALUES +(14,4,'a'), (15,7,'b'), (16,4,'c'), (17,1,'d'), (18,9,'e'), +(19,4,'f'), (20,8,'g'); +SET SESSION optimizer_switch='derived_merge=on,subquery_cache=off,materialization=off'; +# The following two EXPLAINs must return the same execution plan +EXPLAIN +SELECT * FROM t1 , t2 +WHERE (t2.a ,t1.b) NOT IN (SELECT DISTINCT c,a FROM t3 t); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY t unique_subquery PRIMARY,c PRIMARY 4 func 1 Using where +EXPLAIN +SELECT * FROM t1 , t2 +WHERE (t2.a ,t1.b) NOT IN (SELECT DISTINCT c,a FROM (SELECT * FROM t3) t); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 +1 PRIMARY t2 ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +2 DEPENDENT SUBQUERY t3 unique_subquery PRIMARY,c PRIMARY 4 func 1 Using where +SELECT * FROM t1 , t2 +WHERE (t2.a ,t1.b) NOT IN (SELECT DISTINCT c,a FROM (SELECT * FROM t3) t); +b a +9 1 +7 1 +9 2 +7 2 +DROP TABLE t1,t2,t3; +# +# LP bug #874006: materialized view used in IN subquery +# +CREATE TABLE t3 (a int NOT NULL, b varchar(1), c varchar(1)); +INSERT INTO t3 VALUES (19,NULL,NULL), (20,'r','r'); +CREATE TABLE t1 (a int, b varchar(1) , c varchar(1)); +INSERT INTO t1 VALUES (1,NULL,NULL), (5,'r','r'), (7,'y','y'); +CREATE TABLE t2 (a int NOT NULL , b int, c varchar(1)); +INSERT INTO t2 VALUES (4,3,'r'); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='semijoin_with_cache=off'; +SET SESSION optimizer_switch='derived_with_keys=off'; +EXPLAIN +SELECT * FROM t3 +WHERE t3.b IN (SELECT v1.b FROM v1, t2 +WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system NULL NULL NULL NULL 1 +1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where +1 PRIMARY <derived3> ALL NULL NULL NULL NULL 3 Using where; Start temporary; End temporary +3 DERIVED t1 ALL NULL NULL NULL NULL 3 +SELECT * FROM t3 +WHERE t3.b IN (SELECT v1.b FROM v1, t2 +WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c); +a b c +20 r r +SET SESSION optimizer_switch='derived_with_keys=on'; +EXPLAIN +SELECT * FROM t3 +WHERE t3.b IN (SELECT v1.b FROM v1, t2 +WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system NULL NULL NULL NULL 1 +1 PRIMARY <derived3> ref key1 key1 8 const,const 0 Start temporary +1 PRIMARY t3 ALL NULL NULL NULL NULL 2 Using where; End temporary; Using join buffer (flat, BNL join) +3 DERIVED t1 ALL NULL NULL NULL NULL 3 +SELECT * FROM t3 +WHERE t3.b IN (SELECT v1.b FROM v1, t2 +WHERE t2.c = v1.c AND t2.c = v1.b AND v1.b = t3.c); +a b c +20 r r +SET optimizer_switch=@save_optimizer_switch; +DROP VIEW v1; +DROP TABLE t1,t2,t3; +# +# LP bug #873263: materialized view used in correlated IN subquery +# +CREATE TABLE t1 (a int, b int) ; +INSERT INTO t1 VALUES (5,4), (9,8); +CREATE TABLE t2 (a int, b int) ; +INSERT INTO t2 VALUES (4,5), (5,1); +CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2; +SET SESSION optimizer_switch='derived_with_keys=on'; +EXPLAIN +SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +1 PRIMARY <derived3> ref key0 key0 10 test.t1.b,test.t1.a 2 FirstMatch(t1) +3 DERIVED t2 ALL NULL NULL NULL NULL 2 +SELECT * FROM t1 WHERE t1.b IN (SELECT v2.a FROM v2 WHERE v2.b = t1.a); +a b +5 4 +DROP VIEW v2; +DROP TABLE t1,t2; +# +# LP bug #877316: query over a view with correlated subquery in WHERE +# +CREATE TABLE t1 (a int, b int, PRIMARY KEY (a)) ; +INSERT INTO t1 VALUES (18,2), (19,9); +CREATE TABLE t2 (a int, b int) ; +INSERT INTO t2 VALUES (10,8), (5,10); +CREATE VIEW v1 AS SELECT * FROM t1; +SELECT t1.a FROM t1 +WHERE EXISTS (SELECT t2.a FROM t2 WHERE t2.b < t1.b); +a +19 +EXPLAIN +SELECT t1.a FROM t1 +WHERE EXISTS (SELECT t2.a FROM t2 WHERE t2.b < t1.b); +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 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +SELECT v1.a FROM v1 +WHERE EXISTS (SELECT t2.a FROM t2 WHERE t2.b < v1.b); +a +19 +EXPLAIN +SELECT v1.a FROM v1 +WHERE EXISTS (SELECT t2.a FROM t2 WHERE t2.b < v1.b); +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 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 2 Using where +DROP VIEW v1; +DROP TABLE t1,t2; +# +# LP bug #878199: join of two materialized views +# +CREATE TABLE t1 (a int, b varchar(1)) ; +INSERT INTO t1 VALUES (7,'c'), (3,'h'), (7,'c'); +CREATE TABLE t2 (b varchar(1)) ; +INSERT INTO t2 VALUES ('p'), ('c'), ('j'), ('c'), ('p'); +CREATE VIEW v1 AS SELECT * FROM t1 GROUP BY a,b; +CREATE VIEW v2 AS SELECT * FROM t2 GROUP BY b; +SET SESSION optimizer_switch = 'derived_with_keys=on'; +SELECT v1.a FROM v1,v2 WHERE v2.b = v1.b ORDER BY 1; +a +7 +EXPLAIN +SELECT v1.a FROM v1,v2 WHERE v2.b = v1.b ORDER BY 1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 Using where; Using filesort +1 PRIMARY <derived3> ref key0 key0 4 v1.b 2 +3 DERIVED t2 ALL NULL NULL NULL NULL 5 Using temporary; Using filesort +2 DERIVED t1 ALL NULL NULL NULL NULL 3 Using temporary; Using filesort +DROP VIEW v1,v2; +DROP TABLE t1,t2; +# +# Bug #743378: join over merged view employing BNL +# +CREATE TABLE t1 ( d varchar(1) NOT NULL) ; +INSERT INTO t1 VALUES ('j'),('v'),('c'); +CREATE TABLE t2 (h time NOT NULL, d varchar(1) NOT NULL) ; +INSERT INTO t2 VALUES ('05:03:03','w'),('02:59:24','d'),('00:01:58','e'); +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 ( +a int NOT NULL, c int NOT NULL, b int NOT NULL, f date NOT NULL, +g date NOT NULL, h time NOT NULL, j time NOT NULL, k datetime NOT NULL +); +INSERT INTO t5 VALUES +(1,4,0,'0000-00-00','0000-00-00','21:22:34','21:22:34','2002-02-13 17:30'), +(2,6,8,'2004-09-18','2004-09-18','10:50:38','10:50:38','2008-09-27 00:34'); +CREATE VIEW v3 AS SELECT t3.*, t4.i FROM t3, t4, t5; +SET SESSION join_cache_level = 1; +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 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 +w +w +w +w +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; +DROP VIEW v3; +DROP TABLE t1,t2,t3,t4,t5; +# +# Bug #879882: right join within mergeable derived table +# +CREATE TABLE t1 (a varchar(1)); +INSERT INTO t1 VALUES ('c'), ('a'); +CREATE TABLE t2 (a int, b int, c varchar(1)); +INSERT INTO t2 VALUES (29,8,'c'), (39,7,'b'); +CREATE TABLE t3 (b int); +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='outer_join_with_cache=off'; +EXPLAIN EXTENDED +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b AND t.c = t1.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t3 system NULL NULL NULL NULL 0 0.00 Const row not found +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t2`.`b` <> 0 +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b AND t.c = t1.a; +b c a +8 c c +EXPLAIN EXTENDED +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b <> 0 AND t.c = t1.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t3 system NULL NULL NULL NULL 0 0.00 Const row not found +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +Warnings: +Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t2`.`b` <> 0 +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b <> 0 AND t.c = t1.a; +b c a +8 c c +INSERT INTO t3 VALUES (100), (200); +EXPLAIN EXTENDED +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b AND t.c = t1.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`b` = `test`.`t2`.`a`) where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t2`.`b` <> 0 +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b AND t.c = t1.a; +b c a +8 c c +EXPLAIN EXTENDED +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b <> 0 AND t.c = t1.a; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 2 100.00 +1 SIMPLE t2 ALL NULL NULL NULL NULL 2 100.00 Using where; Using join buffer (flat, BNL join) +1 SIMPLE t3 ALL NULL NULL NULL NULL 2 100.00 Using where +Warnings: +Note 1003 select `test`.`t2`.`b` AS `b`,`test`.`t2`.`c` AS `c`,`test`.`t1`.`a` AS `a` from `test`.`t1` join `test`.`t2` left join `test`.`t3` on(`test`.`t3`.`b` = `test`.`t2`.`a`) where `test`.`t2`.`c` = `test`.`t1`.`a` and `test`.`t2`.`b` <> 0 +SELECT t.b, t.c, t1.a +FROM t1, (SELECT t2.b, t2.c FROM t3 RIGHT JOIN t2 ON t2.a = t3.b) AS t +WHERE t.b <> 0 AND t.c = t1.a; +b c a +8 c c +SET optimizer_switch=@save_optimizer_switch; +DROP TABLE t1,t2,t3; +# +# Bug #880724: materialized const view as inner table of outer join +# +CREATE TABLE t1 (a int, b varchar(1)); +INSERT INTO t1 VALUES (9,NULL), (6,'r'), (7,'c'); +CREATE TABLE t2 (a int); +INSERT INTO t2 VALUES (6); +CREATE ALGORITHM=TEMPTABLE VIEW v2 AS SELECT * FROM t2; +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch='outer_join_with_cache=off'; +SET SESSION optimizer_switch = 'derived_with_keys=on'; +SET SESSION join_cache_level = 4; +EXPLAIN +SELECT t1.b,v2.a FROM t1 LEFT JOIN v2 ON v2.a = t1.a; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 3 +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 1 Using where +2 DERIVED t2 system NULL NULL NULL NULL 1 +SELECT t1.b,v2.a FROM t1 LEFT JOIN v2 ON v2.a = t1.a; +b a +NULL NULL +r 6 +c NULL +CREATE TABLE t3 (a int, b varchar(1)); +INSERT INTO t3 VALUES (8,'x'), (5,'r'), (9,'y'); +EXPLAIN +SELECT * FROM t3 +WHERE t3.b <> ANY (SELECT t1.b FROM t1 LEFT JOIN v2 ON v2.a = t1.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 ALL NULL NULL NULL NULL 3 Using where +2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 3 Using where +2 DEPENDENT SUBQUERY <derived3> ALL NULL NULL NULL NULL 1 Using where +3 DERIVED t2 system NULL NULL NULL NULL 1 +SELECT * FROM t3 +WHERE t3.b <> ANY (SELECT t1.b FROM t1 LEFT JOIN v2 ON v2.a = t1.a); +a b +8 x +5 r +9 y +SET SESSION join_cache_level = default; +SET optimizer_switch=@save_optimizer_switch; +DROP VIEW v2; +DROP TABLE t1,t2,t3; +# +# Bug #881449: OUTER JOIN usin a merged view within IN subquery +# +CREATE TABLE t1 (a varchar(1)) ; +INSERT INTO t1 VALUES ('y'), ('x'); +CREATE TABLE t2 (a int, PRIMARY KEY (a)) ; +INSERT INTO t2 VALUES (1), (2); +CREATE TABLE t3 (a int, b varchar(1)) ; +INSERT INTO t3 VALUES (1,'x'); +CREATE VIEW v3 AS SELECT * FROM t3; +SET SESSION optimizer_switch='semijoin=on'; +EXPLAIN +SELECT * FROM t1 WHERE a IN (SELECT v3.b FROM t2 RIGHT JOIN v3 ON v3.a = t2.a); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t3 system NULL NULL NULL NULL 1 +1 PRIMARY t2 const PRIMARY PRIMARY 4 const 1 Using index +1 PRIMARY t1 ALL NULL NULL NULL NULL 2 Using where +SELECT * FROM t1 WHERE a IN (SELECT v3.b FROM t2 RIGHT JOIN v3 ON v3.a = t2.a); +a +x +set optimizer_switch= @save_optimizer_switch; +DROP VIEW v3; +DROP TABLE t1,t2,t3; +# +# Bug #874035: view as an inner table of a materialized derived +# +CREATE TABLE t2 (a int NOT NULL); +INSERT INTO t2 VALUES (7), (4); +CREATE TABLE t1 (b int NOT NULL); +INSERT INTO t1 VALUES (5), (7); +CREATE ALGORITHM=MERGE VIEW v1 AS SELECT * FROM t1; +SET @save_optimizer_switch=@@optimizer_switch; +SET SESSION optimizer_switch='derived_merge=off'; +PREPARE st1 FROM +'SELECT * FROM (SELECT * FROM t2 LEFT JOIN v1 ON t2.a = v1.b) AS t'; +EXECUTE st1; +a b +7 7 +4 NULL +EXECUTE st1; +a b +7 7 +4 NULL +DEALLOCATE PREPARE st1; +set SESSION optimizer_switch= @save_optimizer_switch; +DROP VIEW v1; +DROP TABLE t1,t2; +# +# LP bug #879939: assertion in ha_maria::enable_indexes +# with derived_with_keys=on +# +CREATE TABLE t2 (a varchar(3)); +INSERT INTO t2 VALUES ('USA'), ('USA'), ('USA'), ('USA'), ('USA'); +CREATE TABLE t1 (a varchar(3), b varchar(35)); +INSERT INTO t1 VALUES +('USA','Lansing'), ('USA','Laredo'), ('USA','Las Vegas'), +('USA','Lexington-Fayett'), ('USA','Lincoln'), ('USA','Little Rock'), +('USA','Livonia'), ('USA','Long Beach'), ('USA','Los Angeles'), +('USA','Louisville'), ('USA','Lowell'), ('USA','Lubbock'), +('USA','Macon'), ('USA','Madison'), ('USA','Manchester'), +('USA','McAllen'), ('USA','Memphis'), ('USA','Mesa'), +('USA','Mesquite'), ('USA','Metairie'), ('USA','Miami'); +CREATE TABLE t3 (a varchar(35)); +INSERT INTO t3 VALUES ('Miami'); +SET @save_optimizer_switch=@@optimizer_switch; +SET optimizer_switch = 'derived_with_keys=on'; +SET @@tmp_table_size=1024*4; +explain SELECT * FROM (SELECT t1.* FROM t1, t2) AS t JOIN t3 ON t3.a = t.b; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t3 system NULL NULL NULL NULL 1 +1 SIMPLE t2 ALL NULL NULL NULL NULL 5 +1 SIMPLE t1 ALL NULL NULL NULL NULL 21 Using where; Using join buffer (flat, BNL join) +SELECT * FROM (SELECT t1.* FROM t1, t2) AS t JOIN t3 ON t3.a = t.b; +a b a +USA Miami Miami +USA Miami Miami +USA Miami Miami +USA Miami Miami +USA Miami Miami +SET @@tmp_table_size=1024*1024*16; +SELECT * FROM (SELECT t1.* FROM t1, t2) AS t JOIN t3 ON t3.a = t.b; +a b a +USA Miami Miami +USA Miami Miami +USA Miami Miami +USA Miami Miami +USA Miami Miami +SET @@tmp_table_size=default; +set SESSION optimizer_switch= @save_optimizer_switch; +drop table t1,t2,t3; +# +# BUG#882994: Crash in QUICK_RANGE_SELECT::reset with derived_with_keys +# +CREATE TABLE t2 ( +pk varchar(33), +col_varchar_key varchar(3) NOT NULL, +col_varchar_nokey varchar(52) NOT NULL); +INSERT INTO t2 VALUES ('NICSpanish','NIC','Spanish'), +('NERHausa','NER','Hausa'),('NGAJoruba','NGA','Joruba'), +('NIUNiue','NIU','Niue'),('NFKEnglish','NFK','English'), +('NORNorwegian','NOR','Norwegian'),('CIVAkan','CIV','Akan'), +('OMNArabic','OMN','Arabic'),('PAKPunjabi','PAK','Punjabi'), +('PLWPalau','PLW','Palau'),('PANSpanish','PAN','Spanish'), +('PNGPapuan Langua','PNG','Papuan Languages'), ('PRYSpanish','PRY','Spanish'), +('PERSpanish','PER','Spanish'), ('PCNPitcairnese','PCN','Pitcairnese'), +('MNPPhilippene La','MNP','Philippene Langu'),('PRTPortuguese','PRT','Portuguese'), +('PRISpanish','PRI','Spanish'),('POLPolish','POL','Polish'),('GNQFang','GNQ','Fang'); +CREATE TABLE t1 ( col_varchar_nokey varchar(52) NOT NULL ) ; +INSERT INTO t1 VALUES ('Chinese'),('English'),('French'),('German'), +('Italian'),('Japanese'),('Korean'),('Polish'),('Portuguese'),('Spanish'), +('Tagalog'),('Vietnamese'); +CREATE TABLE t3 ( col_varchar_key varchar(52)) ; +INSERT INTO t3 VALUES ('United States'); +set @tmp_882994= @@max_heap_table_size; +set max_heap_table_size=1; +SELECT * +FROM t3 JOIN +( SELECT t2.* FROM t1, t2 ) AS alias2 +ON ( alias2.col_varchar_nokey = t3.col_varchar_key ) +ORDER BY CONCAT(alias2.col_varchar_nokey); +col_varchar_key pk col_varchar_key col_varchar_nokey +set max_heap_table_size= @tmp_882994; +drop table t1,t2,t3; +# +# LP bug #917990: Bad estimate of #rows for derived table with LIMIT +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES +(8), (3), (4), (7), (9), (5), (1), (2); +SELECT * FROM (SELECT * FROM t1 LIMIT 3) t; +a +8 +3 +4 +EXPLAIN +SELECT * FROM (SELECT * FROM t1 LIMIT 3) t; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 +2 DERIVED t1 ALL NULL NULL NULL NULL 8 +DROP TABLE t1; +# +# LP BUG#921878 incorrect check of items during columns union types +# aggregation for merged derived tables +# +SET @save_optimizer_switch=@@optimizer_switch; +SET SESSION optimizer_switch='derived_merge=on'; +CREATE TABLE t1 ( a ENUM( 'x', 'y' ) ); +insert into t1 values ('x'); +CREATE TABLE t2 LIKE t1; +insert into t1 values ('y'); +CREATE TABLE t3 LIKE t1; +INSERT INTO t3 +SELECT * FROM ( SELECT * FROM t1 ) AS A +UNION SELECT * FROM t2; +select * from t3; +a +x +y +drop table t1,t2,t3; +set SESSION optimizer_switch= @save_optimizer_switch; +# +# LP BUG#944782: derived table from an information schema table +# +SET @save_optimizer_switch=@@optimizer_switch; +SET SESSION optimizer_switch='derived_merge=on'; +SET SESSION optimizer_switch='derived_with_keys=on'; +CREATE TABLE t1 (c1 int PRIMARY KEY, c2 char(5)); +EXPLAIN +SELECT COUNT(*) > 0 +FROM INFORMATION_SCHEMA.COLUMNS +INNER JOIN +(SELECT TABLE_SCHEMA, +GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX ASC) AS COL_NAMES +FROM INFORMATION_SCHEMA.STATISTICS +GROUP BY TABLE_SCHEMA) AS UNIQUES +ON ( COLUMNS.TABLE_SCHEMA = UNIQUES.TABLE_SCHEMA); +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY COLUMNS ALL NULL NULL NULL NULL NULL Open_frm_only; Scanned all databases +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using where; Using join buffer (flat, BNL join) +2 DERIVED STATISTICS ALL NULL NULL NULL NULL NULL Open_frm_only; Scanned all databases; Using filesort +SELECT COUNT(*) > 0 +FROM INFORMATION_SCHEMA.COLUMNS +INNER JOIN +(SELECT TABLE_SCHEMA, +GROUP_CONCAT(COLUMN_NAME ORDER BY SEQ_IN_INDEX ASC) AS COL_NAMES +FROM INFORMATION_SCHEMA.STATISTICS +GROUP BY TABLE_SCHEMA) AS UNIQUES +ON ( COLUMNS.TABLE_SCHEMA = UNIQUES.TABLE_SCHEMA); +COUNT(*) > 0 +1 +Warnings: +Warning 1286 Unknown storage engine 'InnoDB' +Warning 1286 Unknown storage engine 'InnoDB' +Warning 1286 Unknown storage engine 'InnoDB' +Warning 1286 Unknown storage engine 'InnoDB' +Warning 1286 Unknown storage engine 'InnoDB' +Warning 1286 Unknown storage engine 'InnoDB' +DROP TABLE t1; +SET SESSION optimizer_switch= @save_optimizer_switch; +# +# LP BUG#953649: crash when estimating the cost of a look-up +# into a derived table to be materialized +# +CREATE TABLE t1 (a int); +INSERT INTO t1 VALUES (132); +CREATE TABLE t2 (b int, c varchar(256)); +INSERT INTO t2 VALUES (132,'test1'), (120,'text2'), (132,'text3'); +CREATE VIEW v AS +SELECT b, GROUP_CONCAT(c) AS gc FROM t2 GROUP BY b; +SET @save_optimizer_switch=@@optimizer_switch; +SET SESSION optimizer_switch='derived_merge=off'; +SET SESSION optimizer_switch='derived_with_keys=off'; +EXPLAIN +SELECT * FROM t1, v WHERE a = b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 3 Using where +2 DERIVED t2 ALL NULL NULL NULL NULL 3 Using filesort +SELECT * FROM t1, v WHERE a = b; +a b gc +132 132 test1,text3 +SET SESSION optimizer_switch='derived_merge=on'; +SET SESSION optimizer_switch='derived_with_keys=on'; +EXPLAIN +SELECT * FROM t1, v WHERE a = b; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 system NULL NULL NULL NULL 1 +1 PRIMARY <derived2> ref key0 key0 5 const 0 +2 DERIVED t2 ALL NULL NULL NULL NULL 3 Using filesort +SELECT * FROM t1, v WHERE a = b; +a b gc +132 132 test1,text3 +SET SESSION optimizer_switch= @save_optimizer_switch; +DROP VIEW v; +DROP TABLE t1,t2; +# +# LP BUG#968720 crash due to converting to materialized and +# natural join made only once +# +SET @save968720_optimizer_switch=@@optimizer_switch; +SET optimizer_switch = 'derived_merge=on'; +CREATE TABLE t1 (a int, INDEX(a)); +INSERT INTO t1 VALUES (1); +CREATE TABLE t2 (a int, INDEX(a)); +INSERT INTO t2 VALUES (1), (2); +INSERT INTO t1 SELECT a FROM (SELECT a FROM test.t1) AS s1 NATURAL JOIN +t2 AS s2; +SELECT * FROM t1; +a +1 +1 +DELETE FROM t1; +INSERT INTO t1 VALUES (1); +PREPARE stmt FROM " +INSERT INTO t1 SELECT a FROM (SELECT a FROM test.t1) AS s1 NATURAL JOIN +t2 AS s2; +"; +EXECUTE stmt; +SELECT * FROM t1; +a +1 +1 +EXECUTE stmt; +SELECT * FROM t1; +a +1 +1 +1 +1 +drop table t1,t2; +set optimizer_switch=@save968720_optimizer_switch; +# +# LP BUG#978847 Server crashes in Item_ref::real_item on +# INSERT .. SELECT with FROM subquery and derived_merge=ON +SET @save978847_optimizer_switch=@@optimizer_switch; +SET optimizer_switch = 'derived_merge=on'; +CREATE TABLE t1 ( a INT, b INT ); +INSERT INTO t1 VALUES (2,1),(3,2); +select * from t1; +a b +2 1 +3 2 +INSERT INTO t1 SELECT * FROM +( SELECT * FROM t1 ) AS alias; +select * from t1; +a b +2 1 +3 2 +2 1 +3 2 +prepare stmt1 from 'INSERT INTO t1 SELECT SQL_BIG_RESULT * FROM + ( SELECT * FROM t1 ) AS alias'; +execute stmt1; +select * from t1; +a b +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +execute stmt1; +select * from t1; +a b +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +2 1 +3 2 +drop table t1; +set optimizer_switch=@save978847_optimizer_switch; +# +# LP bug998516 Server hangs on INSERT .. SELECT with derived_merge, +# FROM subquery, UNION +# +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (3),(4); +INSERT INTO t1 SELECT * FROM ( SELECT * FROM t1 ) AS alias UNION SELECT * FROM t2; +select * from t1; +a +1 +2 +1 +2 +3 +4 +drop table t1,t2; +# +# MDEV-3873: Wrong result (extra rows) with NOT IN and +# a subquery from a MERGE view +# +CREATE TABLE t1 (a INT NOT NULL) ENGINE=MyISAM; +INSERT INTO t1 VALUES (4),(7),(0); +CREATE TABLE t2 (b INT NOT NULL) ENGINE=MyISAM; +INSERT INTO t2 VALUES (1),(2); +CREATE TABLE t3 (c INT NOT NULL) ENGINE=MyISAM; +INSERT INTO t3 VALUES (4),(6),(3); +CREATE TABLE t4 (d INT NOT NULL) ENGINE=MyISAM; +INSERT INTO t4 VALUES (4),(5),(3); +CREATE TABLE tv (e INT NOT NULL) ENGINE=MyISAM; +INSERT INTO tv VALUES (1),(3); +CREATE ALGORITHM=TEMPTABLE VIEW v_temptable AS SELECT * FROM tv; +CREATE ALGORITHM=MERGE VIEW v_merge AS SELECT * FROM tv; +SELECT * FROM t1, t2 +WHERE a NOT IN ( SELECT e FROM t3 LEFT JOIN v_temptable ON (c = e) WHERE c <> b ) AND a < b; +a b +SELECT * FROM t1, t2 +WHERE a NOT IN ( SELECT e FROM t3 LEFT JOIN v_merge ON (c = e) WHERE c <> b ) AND a < b; +a b +SELECT * FROM t1, t2 +WHERE a NOT IN ( SELECT e FROM t3 LEFT JOIN (SELECT * FROM tv) as derived ON (c = e) WHERE c <> b ) AND a < b; +a b +drop view v_temptable, v_merge; +drop table t1,t2,t3,t4,tv; +# +# MDEV-3912: Wrong result (extra rows) with FROM subquery inside +# ALL subquery, LEFT JOIN, derived_merge. +# (duplicate of MDEV-3873 (above)) +# +SET @save3912_optimizer_switch=@@optimizer_switch; +SET optimizer_switch = 'derived_merge=on,in_to_exists=on'; +CREATE TABLE t1 (a INT) ENGINE=MyISAM; +INSERT INTO t1 VALUES (4),(8); +CREATE TABLE t2 (b INT) ENGINE=MyISAM; +INSERT INTO t2 VALUES (7),(0); +CREATE TABLE t3 (c INT, d INT NOT NULL) ENGINE=MyISAM; +INSERT INTO t3 VALUES (0,4),(8,6); +SELECT * FROM t1 +WHERE a >= ALL ( +SELECT d FROM t2 LEFT JOIN ( SELECT * FROM t3 ) AS alias ON ( c = b ) +WHERE b >= a +); +a +8 +set optimizer_switch=@save3912_optimizer_switch; +drop table t1, t2, t3; +# +# MDEV-4209: equi-join on BLOB column from materialized view +# or derived table +# +set @save_optimizer_switch=@@optimizer_switch; +set optimizer_switch='derived_with_keys=on'; +CREATE TABLE t1 (c1 text, c2 int); +INSERT INTO t1 VALUES ('a',1), ('c',3), ('g',7), ('d',4), ('c',3); +CREATE TABLE t2 (c1 text, c2 int); +INSERT INTO t2 VALUES ('b',2), ('c',3); +CREATE ALGORITHM=TEMPTABLE VIEW v1 AS SELECT * FROM t1; +EXPLAIN EXTENDED +SELECT v1.c1, v1.c2 FROM v1, t2 WHERE v1.c1=t2.c1 AND v1.c2=t2.c2; +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 <derived2> ref key0 key0 5 test.t2.c2 2 100.00 Using where +2 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00 +Warnings: +Note 1003 /* select#1 */ select `v1`.`c1` AS `c1`,`v1`.`c2` AS `c2` from `test`.`v1` join `test`.`t2` where `v1`.`c1` = `test`.`t2`.`c1` and `v1`.`c2` = `test`.`t2`.`c2` +SELECT v1.c1, v1.c2 FROM v1, t2 WHERE v1.c1=t2.c1 AND v1.c2=t2.c2; +c1 c2 +c 3 +c 3 +EXPLAIN EXTENDED +SELECT t2.c1, t2.c2 FROM (SELECT c1 g, MAX(c2) m FROM t1 GROUP BY c1) t, t2 +WHERE t.g=t2.c1 AND t.m=t2.c2; +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 <derived2> ref key0 key0 5 test.t2.c2 2 100.00 Using where +2 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00 Using temporary; Using filesort +Warnings: +Note 1003 /* select#1 */ select `test`.`t2`.`c1` AS `c1`,`test`.`t2`.`c2` AS `c2` from (/* select#2 */ select `test`.`t1`.`c1` AS `g`,max(`test`.`t1`.`c2`) AS `m` from `test`.`t1` group by `test`.`t1`.`c1`) `t` join `test`.`t2` where `t`.`g` = `test`.`t2`.`c1` and `t`.`m` = `test`.`t2`.`c2` +SELECT t2.c1, t2.c2 FROM (SELECT c1 g, MAX(c2) m FROM t1 GROUP BY c1) t, t2 +WHERE t.g=t2.c1 AND t.m=t2.c2; +c1 c2 +c 3 +EXPLAIN EXTENDED +SELECT v1.c1, v1.c2, t2.c1, t2.c2 FROM v1, t2 WHERE v1.c1=t2.c1; +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 +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 5 100.00 Using where; Using join buffer (flat, BNL join) +2 DERIVED t1 ALL NULL NULL NULL NULL 5 100.00 +Warnings: +Note 1003 /* select#1 */ select `v1`.`c1` AS `c1`,`v1`.`c2` AS `c2`,`test`.`t2`.`c1` AS `c1`,`test`.`t2`.`c2` AS `c2` from `test`.`v1` join `test`.`t2` where `v1`.`c1` = `test`.`t2`.`c1` +SELECT v1.c1, v1.c2, t2.c1, t2.c2 FROM v1, t2 WHERE v1.c1=t2.c1; +c1 c2 c1 c2 +c 3 c 3 +c 3 c 3 +DROP VIEW v1; +DROP TABLE t1,t2; +set optimizer_switch=@save_optimizer_switch; +# +# mdev-5078: sum over a view/derived table +# +CREATE TABLE t1 (a int); +INSERT INTO t1 (a) VALUES (1), (2); +CREATE TABLE t2 (b int(11)); +INSERT INTO t2 (b) VALUES (1), (2); +CREATE VIEW v AS SELECT b as c FROM t2; +SELECT a, (SELECT SUM(a + c) FROM v) FROM t1; +a (SELECT SUM(a + c) FROM v) +1 5 +2 7 +SELECT a, (SELECT SUM(a + c) FROM (SELECT b as c FROM t2) AS v1) FROM t1; +a (SELECT SUM(a + c) FROM (SELECT b as c FROM t2) AS v1) +1 5 +2 7 +DROP VIEW v; +DROP TABLE t1,t2; +# +# mdev-5105: memory overwrite in multi-table update +# using natural join with a view +# +create table t1(a int,b tinyint,c tinyint)engine=myisam; +create table t2(a tinyint,b float,c int, d int, e int, f int, key (b), key(c), key(d), key(e), key(f))engine=myisam; +create table t3(a int,b int,c int, d int, e int, f int, key(a), key(b), key(c), key(d), key(e), key(f))engine=myisam; +create view v1 as select t2.b a, t1.b b, t2.c c, t2.d d, t2.e e, t2.f f from t1,t2 where t1.a=t2.a; +update t3 natural join v1 set a:=1; +drop view v1; +drop table t1,t2,t3; +# +# mdev-5288: assertion failure for query over a view with ORDER BY +# +CREATE TABLE t1 (a int, b int) ENGINE=MyISAM; +INSERT INTO t1 VALUES (4,1); +CREATE ALGORITHM=MERGE VIEW v1 AS SELECT * FROM t1; +EXPLAIN EXTENDED SELECT a FROM v1 WHERE a > 100 ORDER BY b; +id select_type table type possible_keys key key_len ref rows filtered Extra +1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables +Warnings: +Note 1003 select 4 AS `a` from dual where 0 order by 1 +DROP VIEW v1; +DROP TABLE t1; +CREATE TABLE IF NOT EXISTS `galleries` ( +`id` int(11) NOT NULL AUTO_INCREMENT, +`name` varchar(100) NOT NULL, +`year` int(11) DEFAULT NULL, +PRIMARY KEY (`id`), +UNIQUE KEY `name` (`name`) +) DEFAULT CHARSET=utf8; +CREATE TABLE IF NOT EXISTS `pictures` ( +`id` int(11) NOT NULL AUTO_INCREMENT, +`name` varchar(100) NOT NULL, +`width` float DEFAULT NULL, +`height` float DEFAULT NULL, +`year` int(4) DEFAULT NULL, +`technique` varchar(50) DEFAULT NULL, +`comment` varchar(2000) DEFAULT NULL, +`gallery_id` int(11) NOT NULL, +`type` int(11) NOT NULL, +PRIMARY KEY (`id`), +KEY `gallery_id` (`gallery_id`) +) DEFAULT CHARSET=utf8 ; +ALTER TABLE `pictures` +ADD CONSTRAINT `pictures_ibfk_1` FOREIGN KEY (`gallery_id`) REFERENCES `galleries` (`id`); +INSERT INTO `galleries` (`id`, `name`, `year`) VALUES +(1, 'Quand le noir et blanc invite le taupe', 2013), +(2, 'Une touche de couleur', 2012), +(3, 'Éclats', 2011), +(4, 'Gris béton', 2010), +(5, 'Expression du spalter', 2010), +(6, 'Zénitude', 2009), +(7, 'La force du rouge', 2008), +(8, 'Sphères', NULL), +(9, 'Centre', 2009), +(10, 'Nébuleuse', NULL); +INSERT INTO `pictures` (`id`, `name`, `width`, `height`, `year`, `technique`, `comment`, `gallery_id`, `type`) VALUES +(1, 'Éclaircie', 72.5, 100, NULL, NULL, NULL, 1, 1), +(2, 'Architecture', 81, 100, NULL, NULL, NULL, 1, 1), +(3, 'Nouveau souffle', 72.5, 100, NULL, NULL, NULL, 1, 1), +(4, 'Échanges (2)', 89, 116, NULL, NULL, NULL, 1, 1), +(5, 'Échanges', 89, 116, NULL, NULL, NULL, 1, 1), +(6, 'Fenêtre de vie', 81, 116, NULL, NULL, NULL, 1, 1), +(7, 'Architecture', 81, 100, NULL, NULL, NULL, 1, 1), +(8, 'Nouveau souffle (2)', 72.5, 100, NULL, NULL, NULL, 1, 1), +(9, 'Fluidité', 89, 116, NULL, NULL, NULL, 1, 1), +(10, 'Nouveau Monde', 89, 125, NULL, NULL, NULL, 1, 1), +(11, 'Mirage', 73, 100, NULL, NULL, NULL, 1, 1), +(12, 'Équilibre', 72.5, 116, NULL, NULL, NULL, 2, 1), +(13, 'Fusion', 72.5, 116, NULL, NULL, NULL, 2, 1), +(14, 'Étincelles', NULL, NULL, NULL, NULL, NULL, 3, 1), +(15, 'Régénérescence', NULL, NULL, NULL, NULL, NULL, 3, 1), +(16, 'Chaleur', 80, 80, NULL, NULL, NULL, 4, 1), +(17, 'Création', 90, 90, NULL, NULL, NULL, 4, 1), +(18, 'Horizon', 92, 73, NULL, NULL, NULL, 4, 1), +(19, 'Labyrinthe', 81, 100, NULL, NULL, NULL, 4, 1), +(20, 'Miroir', 80, 116, NULL, NULL, NULL, 5, 1), +(21, 'Libération', 81, 116, NULL, NULL, NULL, 5, 1), +(22, 'Éclats', 81, 116, NULL, NULL, NULL, 5, 1), +(23, 'Zénitude', 116, 89, NULL, NULL, NULL, 6, 1), +(24, 'Écritures lointaines', 90, 90, NULL, NULL, NULL, 7, 1), +(25, 'Émergence', 80, 80, NULL, NULL, NULL, 7, 1), +(26, 'Liberté', 50, 50, NULL, NULL, NULL, 7, 1), +(27, 'Silhouettes amérindiennes', 701, 70, NULL, NULL, NULL, 7, 1), +(28, 'Puissance', 81, 100, NULL, NULL, NULL, 8, 1), +(29, 'Source', 73, 116, NULL, NULL, NULL, 8, 1), +(30, 'Comme une ville qui prend vie', 50, 100, 2008, NULL, NULL, 9, 1), +(31, 'Suspension azur', 80, 80, NULL, NULL, NULL, 9, 1), +(32, 'Nébuleuse', 70, 70, NULL, NULL, NULL, 10, 1), +(33, 'Œuvre commandée 120 P', 114, 195, NULL, NULL, NULL, 1, 2), +(34, 'Œuvre commandée 120 P', 114, 195, NULL, NULL, NULL, 1, 2), +(35, 'Œuvre commandée 120 P', 114, 195, NULL, NULL, NULL, 1, 2), +(36, 'Œuvre commandée 120 P', 114, 195, NULL, NULL, NULL, 1, 2), +(37, 'Œuvre commandée 120 P', 114, 195, NULL, NULL, NULL, 1, 2), +(38, 'Œuvre commandée 120 P', 114, 195, NULL, NULL, NULL, 1, 2); +explain +SELECT g.id AS gallery_id, +g.name AS gallery_name, +p.id AS picture_id, +p.name AS picture_name, +g.p_random AS r1, +g.p_random AS r2, +g.p_random AS r3 +FROM +( +SELECT gal.id, +gal.name, +( +SELECT pi.id +FROM pictures pi +WHERE pi.gallery_id = gal.id +ORDER BY RAND() +LIMIT 1 +) AS p_random +FROM galleries gal +) g +LEFT JOIN pictures p +ON p.id = g.p_random +ORDER BY gallery_name ASC +; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 10 Using filesort +1 PRIMARY p eq_ref PRIMARY PRIMARY 4 g.p_random 1 Using where +2 DERIVED gal ALL NULL NULL NULL NULL 10 +3 DEPENDENT SUBQUERY pi ref gallery_id gallery_id 4 test.gal.id 4 Using temporary; Using filesort +drop table galleries, pictures; +# +# MDEV-5740: Assertion +#`!derived->first_select()->exclude_from_table_unique_test || +#derived->outer_select()-> exclude_from_table_unique_test' +#failed on 2nd execution of PS with derived_merge +# +set @save_optimizer_switch5740=@@optimizer_switch; +SET optimizer_switch = 'derived_merge=on'; +CREATE TABLE t1 (a INT); +INSERT INTO t1 VALUES (1),(2); +CREATE TABLE t2 (b INT); +INSERT INTO t2 VALUES (3),(4); +PREPARE stmt FROM ' + INSERT INTO t1 SELECT * FROM t2 UNION SELECT * FROM (SELECT * FROM t1) AS sq +'; +EXECUTE stmt; +select * from t1; +a +1 +2 +3 +4 +1 +2 +EXECUTE stmt; +select * from t1; +a +1 +2 +3 +4 +1 +2 +3 +4 +1 +2 +deallocate prepare stmt; +drop table t1,t2; +set optimizer_switch=@save_optimizer_switch5740; +# +# Bug mdev-5721: possible long key access to a materialized derived table +# (see also the test case for Bug#13261277 that is actually the same bug) +# +CREATE TABLE t1 ( +id varchar(255) NOT NULL DEFAULT '', +familyid int(11) DEFAULT NULL, +withdrawndate date DEFAULT NULL, +KEY index_td_familyid_id (familyid,id) +) ENGINE=MyISAM DEFAULT CHARSET=utf8; +CREATE TABLE t2 ( +id int(11) NOT NULL AUTO_INCREMENT, +activefromts datetime NOT NULL DEFAULT '0000-00-00 00:00:00', +shortdescription text, +useraccessfamily varchar(512) DEFAULT NULL, +serialized longtext, +PRIMARY KEY (id) +) ENGINE=MyISAM DEFAULT CHARSET=utf8; +insert into t1 values ('picture/89/1369722032695.pmd',89,NULL); +insert into t1 values ('picture/90/1369832057370.pmd',90,NULL); +insert into t2 values (38,'2013-03-04 07:49:22','desc','CODE','string'); +EXPLAIN +SELECT * FROM t2 x, +(SELECT t2.useraccessfamily, t2.serialized AS picturesubuser, COUNT(*) +FROM t2, t1 GROUP BY t2.useraccessfamily, picturesubuser) y +WHERE x.useraccessfamily = y.useraccessfamily; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY x system NULL NULL NULL NULL 1 +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using where +2 DERIVED t2 system NULL NULL NULL NULL 1 +2 DERIVED t1 index NULL index_td_familyid_id 772 NULL 2 Using index +SELECT * FROM t2 x, +(SELECT t2.useraccessfamily, t2.serialized AS picturesubuser, COUNT(*) +FROM t2, t1 GROUP BY t2.useraccessfamily, picturesubuser) y +WHERE x.useraccessfamily = y.useraccessfamily; +id activefromts shortdescription useraccessfamily serialized useraccessfamily picturesubuser COUNT(*) +38 2013-03-04 07:49:22 desc CODE string CODE string 2 +DROP TABLE t1,t2; +# +# Bug#13261277: Unchecked key length caused missing records. +# +CREATE TABLE t1 ( +col_varchar varchar(1024) CHARACTER SET utf8 DEFAULT NULL, +stub1 varchar(1024) CHARACTER SET utf8 DEFAULT NULL, +stub2 varchar(1024) CHARACTER SET utf8 DEFAULT NULL, +stub3 varchar(1024) CHARACTER SET utf8 DEFAULT NULL +); +INSERT INTO t1 VALUES +('d','d','l','ther'), +(NULL,'s','NJBIQ','trzetuchv'), +(-715390976,'coul','MYWFB','cfhtrzetu'), +(1696792576,'f','i\'s','c'), + (1,'i','ltpemcfhtr','gsltpemcf'), + (-663027712,'mgsltpemcf','sa','amgsltpem'), + (-1686700032,'JPRVK','i','vamgsltpe'), + (NULL,'STUNB','UNVJV','u'), + (5,'oka','qyihvamgsl','AXSMD'), + (NULL,'tqwmqyihva','h','yntqwmqyi'), + (3,'EGMJN','e','e'); +CREATE TABLE t2 ( +col_varchar varchar(10) DEFAULT NULL, +col_int INT DEFAULT NULL +); +INSERT INTO t2 VALUES ('d',9); +set optimizer_switch='derived_merge=off,derived_with_keys=on'; +SET @save_heap_size= @@max_heap_table_size; +SET @@max_heap_table_size= 16384; +SELECT t2.col_int +FROM t2 +RIGHT JOIN ( SELECT * FROM t1 ) AS dt +ON t2.col_varchar = dt.col_varchar +WHERE t2.col_int IS NOT NULL ; +col_int +9 +# Shouldn't use auto_key0 for derived table +EXPLAIN +SELECT t2.col_int +FROM t2 +RIGHT JOIN ( SELECT * FROM t1 ) AS dt +ON t2.col_varchar = dt.col_varchar +WHERE t2.col_int IS NOT NULL ; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t2 system NULL NULL NULL NULL 1 +1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 Using where +2 DERIVED t1 ALL NULL NULL NULL NULL 11 +SET @@max_heap_table_size= @save_heap_size; +SET optimizer_switch=@save_optimizer_switch; +DROP TABLE t1,t2; +# +# end of 5.3 tests +# +# +# Bug mdev-11161: The second execution of prepared statement +# does not use generated key for materialized +# derived table / view +# (actually this is a 5.3 bug.) +# +create table t1 ( +mat_id MEDIUMINT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY, +matintnum CHAR(6) NOT NULL, +test MEDIUMINT UNSIGNED NULL +); +create table t2 ( +mat_id MEDIUMINT UNSIGNED NOT NULL, +pla_id MEDIUMINT UNSIGNED NOT NULL +); +insert into t1 values +(NULL, 'a', 1), (NULL, 'b', 2), (NULL, 'c', 3), (NULL, 'd', 4), +(NULL, 'e', 5), (NULL, 'f', 6), (NULL, 'g', 7), (NULL, 'h', 8), +(NULL, 'i', 9); +insert into t2 values +(1, 100), (1, 101), (1, 102), (2, 100), (2, 103), (2, 104), +(3, 101), (3, 102), (3, 105); +explain +SELECT STRAIGHT_JOIN d.pla_id, m2.mat_id +FROM t1 m2 +INNER JOIN +(SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum +FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id +GROUP BY mp.pla_id) d +ON d.matintnum=m2.matintnum; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY m2 ALL NULL NULL NULL NULL 9 +1 PRIMARY <derived2> ref key0 key0 7 test.m2.matintnum 2 +2 DERIVED mp ALL NULL NULL NULL NULL 9 Using temporary; Using filesort +2 DERIVED m1 eq_ref PRIMARY PRIMARY 3 test.mp.mat_id 1 +prepare stmt1 from +"SELECT STRAIGHT_JOIN d.pla_id, m2.mat_id + FROM t1 m2 + INNER JOIN + (SELECT mp.pla_id, MIN(m1.matintnum) AS matintnum + FROM t2 mp INNER JOIN t1 m1 ON mp.mat_id=m1.mat_id + GROUP BY mp.pla_id) d + ON d.matintnum=m2.matintnum"; +flush status; +execute stmt1; +pla_id mat_id +102 1 +101 1 +100 1 +104 2 +103 2 +105 3 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 21 +Handler_read_last 0 +Handler_read_next 6 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 6 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 27 +flush status; +execute stmt1; +pla_id mat_id +102 1 +101 1 +100 1 +104 2 +103 2 +105 3 +show status like '%Handler_read%'; +Variable_name Value +Handler_read_first 0 +Handler_read_key 21 +Handler_read_last 0 +Handler_read_next 6 +Handler_read_prev 0 +Handler_read_retry 0 +Handler_read_rnd 6 +Handler_read_rnd_deleted 0 +Handler_read_rnd_next 27 +deallocate prepare stmt1; +drop table t1,t2; +# +# Bug mdev-12670: mergeable derived / view with subqueries +# subject to semi-join optimizations +# (actually this is a 5.3 bug.) +# +create table t1 (a int) engine=myisam; +insert into t1 values (5),(3),(2),(7),(2),(5),(1); +create table t2 (b int, index idx(b)) engine=myisam; +insert into t2 values (2),(3),(2),(1),(3),(4); +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +insert into t2 select b+10 from t2; +analyze table t1,t2; +Table Op Msg_type Msg_text +test.t1 analyze status OK +test.t2 analyze status OK +explain select a 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 7 Using where +1 PRIMARY t2 ref idx idx 5 test.t1.a 140 Using index; FirstMatch(t1) +explain select * from (select a from t1 where a in (select b from t2)) t; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 7 Using where +1 PRIMARY t2 ref idx idx 5 test.t1.a 140 Using index; FirstMatch(t1) +create view v1 as select a from t1 where a in (select b from t2); +explain select * from v1; +id select_type table type possible_keys key key_len ref rows Extra +1 PRIMARY t1 ALL NULL NULL NULL NULL 7 Using where +1 PRIMARY t2 ref idx idx 5 test.t1.a 140 Using index; FirstMatch(t1) +drop view v1; +drop table t1,t2; +# +# Bug mdev-12812: mergeable derived / view with subqueries +# NOT subject to semi-join optimizations +# +CREATE TABLE t1 (c1 varchar(3)) ENGINE=MyISAM; +INSERT INTO t1 VALUES ('foo'),('foo'); +CREATE TABLE t2 (c2 varchar(3)) ENGINE=MyISAM; +INSERT INTO t2 VALUES ('bar'),('qux'),('foo'); +SELECT STRAIGHT_JOIN * +FROM ( SELECT * FROM t1 WHERE c1 IN ( SELECT c2 FROM t2 ) ) AS sq; +c1 +foo +foo +EXPLAIN EXTENDED SELECT STRAIGHT_JOIN * +FROM ( SELECT * FROM t1 WHERE c1 IN ( SELECT c2 FROM t2 ) ) AS sq; +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 Using where +3 DEPENDENT SUBQUERY t2 ALL NULL NULL NULL NULL 3 100.00 Using where +Warnings: +Note 1003 /* select#1 */ select straight_join `test`.`t1`.`c1` AS `c1` from `test`.`t1` where <in_optimizer>(`test`.`t1`.`c1`,<exists>(/* select#3 */ select `test`.`t2`.`c2` from `test`.`t2` where <cache>(`test`.`t1`.`c1`) = `test`.`t2`.`c2`)) +DROP TABLE t1, t2; +set optimizer_switch=@exit_optimizer_switch; +set join_cache_level=@exit_join_cache_level; |