database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-29 05:21:33 +03:00
Code Activity

Set new default values for the optimizer switch flags 'derived_merge'

Browse Source 
and 'derived_with_keys'. Now they are set on by default.
This commit is contained in:
Igor Babaev
2011-11-26 14:23:00 -08:00
parent d84ea521c5
commit 17b4e4a194
49 changed files with 208 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
mysql-test/include/index_merge1.inc
View File

@ -264,7 +264,10 @@ explain select * from t1 where key1=3 or key2=4
union select * from t1 where key1<4 or key3=5; union select * from t1 where key1<4 or key3=5;
# index merge in subselect # index merge in subselect
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5; explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5;
set optimizer_switch=@tmp_optimizer_switch;
# 12. check for long index_merges. # 12. check for long index_merges.
create table t3 like t0; create table t3 like t0;

4
mysql-test/r/derived.result
View File

@ -1,4 +1,6 @@
drop table if exists t1,t2,t3; drop table if exists t1,t2,t3;
set @save_derived_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select * from (select 2 from DUAL) b; select * from (select 2 from DUAL) b;
2 2
2 2
@ -205,6 +207,7 @@ x
1 1
create user mysqltest_1; create user mysqltest_1;
create table t1 select 1 as a; create table t1 select 1 as a;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select 2 as a from (select * from t1) b; select 2 as a from (select * from t1) b;
ERROR 3D000: No database selected ERROR 3D000: No database selected
use test; use test;
@ -413,3 +416,4 @@ MIN(i)
1 1
DROP TABLE t1; DROP TABLE t1;
# End of 5.0 tests # End of 5.0 tests
set optimizer_switch=@save_derived_optimizer_switch;

3
mysql-test/r/explain.result
View File

@ -309,6 +309,8 @@ End of 5.1 tests.
CREATE TABLE t1 (a int) ; CREATE TABLE t1 (a int) ;
CREATE TABLE t2 (a int) ; CREATE TABLE t2 (a int) ;
INSERT INTO t2 VALUES (8); INSERT INTO t2 VALUES (8);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT * FROM ( SELECT t1.a FROM t1,t2 WHERE t2.a = t1.a ) AS t; SELECT * FROM ( SELECT t1.a FROM t1,t2 WHERE t2.a = t1.a ) AS t;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -316,4 +318,5 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table 2 DERIVED NULL NULL NULL NULL NULL NULL NULL NULL no matching row in const table
Warnings: Warnings:
Note 1003 select NULL AS `a` from (select NULL AS `a` from `test`.`t1` join `test`.`t2` where 0) `t` Note 1003 select NULL AS `a` from (select NULL AS `a` from `test`.`t1` join `test`.`t2` where 0) `t`
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1,t2; DROP TABLE t1,t2;

3
mysql-test/r/func_group.result
View File

@ -1930,6 +1930,8 @@ FROM t2);
MIN(a) MIN(a)
NULL NULL
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXPLAIN
SELECT MIN(a) SELECT MIN(a)
FROM (SELECT a FROM empty1) tt FROM (SELECT a FROM empty1) tt
@ -1940,6 +1942,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found 1 PRIMARY <derived2> system NULL NULL NULL NULL 0 const row not found
3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 3 SUBQUERY t2 ALL NULL NULL NULL NULL 2
2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table 2 DERIVED NULL NULL NULL NULL NULL NULL NULL no matching row in const table
set optimizer_switch=@tmp_optimizer_switch;
# #
# 5) Test that subquery materialization is setup for query with # 5) Test that subquery materialization is setup for query with

3
mysql-test/r/func_str.result
View File

@ -2547,6 +2547,8 @@ End of 5.0 tests
drop table if exists t1; drop table if exists t1;
create table t1(f1 tinyint default null)engine=myisam; create table t1(f1 tinyint default null)engine=myisam;
insert into t1 values (-1),(null); insert into t1 values (-1),(null);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain select 1 as a from t1,(select decode(f1,f1) as b from t1) a; explain select 1 as a from t1,(select decode(f1,f1) as b from t1) a;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 1 PRIMARY t1 ALL NULL NULL NULL NULL 2
@ -2557,6 +2559,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 ALL NULL NULL NULL NULL 2 1 PRIMARY t1 ALL NULL NULL NULL NULL 2
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join) 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using join buffer (flat, BNL join)
2 DERIVED t1 ALL NULL NULL NULL NULL 2 2 DERIVED t1 ALL NULL NULL NULL NULL 2
set optimizer_switch=@tmp_optimizer_switch;
drop table t1; drop table t1;
# #
# Bug#49141: Encode function is significantly slower in 5.1 compared to 5.0 # Bug#49141: Encode function is significantly slower in 5.1 compared to 5.0

3
mysql-test/r/index_merge_innodb.result
View File

@ -686,6 +686,8 @@ INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1(a,b) SELECT a,b FROM t1; INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1 VALUES (1000000, 0, 0); INSERT INTO t1 VALUES (1000000, 0, 0);
SET SESSION sort_buffer_size = 1024*36; SET SESSION sort_buffer_size = 1024*36;
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXPLAIN
SELECT COUNT(*) FROM SELECT COUNT(*) FROM
(SELECT * FROM t1 FORCE INDEX(primary,idx) (SELECT * FROM t1 FORCE INDEX(primary,idx)
@ -711,6 +713,7 @@ WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
COUNT(*) COUNT(*)
6145 6145
DROP TABLE t1; DROP TABLE t1;
set optimizer_switch=@tmp_optimizer_switch;
# #
# Testcase Backport: BUG#48093: 6.0 Server not processing equivalent IN clauses properly # Testcase Backport: BUG#48093: 6.0 Server not processing equivalent IN clauses properly
# with Innodb tables # with Innodb tables

3
mysql-test/r/index_merge_myisam.result
View File

@ -285,10 +285,13 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t1 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where 1 PRIMARY t1 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where
2 UNION t1 index_merge i1,i3 i1,i3 4,4 NULL 5 Using sort_union(i1,i3); Using where 2 UNION t1 index_merge i1,i3 i1,i3 4,4 NULL 5 Using sort_union(i1,i3); Using where
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5; explain select * from (select * from t1 where key1 = 3 or key2 =3) as Z where key8 >5;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using where 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 Using where
2 DERIVED t1 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where 2 DERIVED t1 index_merge i1,i2 i1,i2 4,4 NULL 2 Using union(i1,i2); Using where
set optimizer_switch=@tmp_optimizer_switch;
create table t3 like t0; create table t3 like t0;
insert into t3 select * from t0; insert into t3 select * from t0;
alter table t3 add key9 int not null, add index i9(key9); alter table t3 add key9 int not null, add index i9(key9);

3
mysql-test/r/information_schema.result
View File

@ -1277,6 +1277,8 @@ COLUMN_NAME MD5(COLUMN_DEFAULT) LENGTH(COLUMN_DEFAULT) COLUMN_DEFAULT=get_value(
fld1 7cf7a6782be951a1f2464a350da926a5 65532 1 fld1 7cf7a6782be951a1f2464a350da926a5 65532 1
DROP TABLE bug23037; DROP TABLE bug23037;
DROP FUNCTION get_value; DROP FUNCTION get_value;
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
create view v1 as create view v1 as
select table_schema as object_schema, select table_schema as object_schema,
table_name as object_name, table_name as object_name,
@ -1290,6 +1292,7 @@ explain select * from (select table_name from information_schema.tables) as a;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED tables ALL NULL NULL NULL NULL NULL Skip_open_table; Scanned all databases 2 DERIVED tables ALL NULL NULL NULL NULL NULL Skip_open_table; Scanned all databases
set optimizer_switch=@tmp_optimizer_switch;
drop view v1; drop view v1;
create table t1 (f1 int(11)); create table t1 (f1 int(11));
create table t2 (f1 int(11), f2 int(11)); create table t2 (f1 int(11), f2 int(11));

36
mysql-test/r/optimizer_switch.result
View File

@ -4,19 +4,19 @@
# #
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='index_merge=off,index_merge_union=off'; set optimizer_switch='index_merge=off,index_merge_union=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='index_merge_union=on'; set optimizer_switch='index_merge_union=on';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=off,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,index_merge_sort_union=off'; set optimizer_switch='default,index_merge_sort_union=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=off,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch=4; set optimizer_switch=4;
ERROR 42000: Variable 'optimizer_switch' can't be set to the value of '4' ERROR 42000: Variable 'optimizer_switch' can't be set to the value of '4'
set optimizer_switch=NULL; set optimizer_switch=NULL;
@ -43,60 +43,60 @@ set optimizer_switch=default;
set optimizer_switch='index_merge=off,index_merge_union=off,default'; set optimizer_switch='index_merge=off,index_merge_union=off,default';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=off,index_merge_union=off,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch=default; set optimizer_switch=default;
select @@global.optimizer_switch; select @@global.optimizer_switch;
@@global.optimizer_switch @@global.optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set @@global.optimizer_switch=default; set @@global.optimizer_switch=default;
select @@global.optimizer_switch; select @@global.optimizer_switch;
@@global.optimizer_switch @@global.optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
# #
# Check index_merge's @@optimizer_switch flags # Check index_merge's @@optimizer_switch flags
# #
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
BUG#37120 optimizer_switch allowable values not according to specification BUG#37120 optimizer_switch allowable values not according to specification
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,materialization=off'; set optimizer_switch='default,materialization=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=off,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=off,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,semijoin=off'; set optimizer_switch='default,semijoin=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,loosescan=off'; set optimizer_switch='default,loosescan=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=off,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=off,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,semijoin=off,materialization=off'; set optimizer_switch='default,semijoin=off,materialization=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,materialization=off,semijoin=off'; set optimizer_switch='default,materialization=off,semijoin=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,semijoin=off,materialization=off,loosescan=off'; set optimizer_switch='default,semijoin=off,materialization=off,loosescan=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=off,materialization=off,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,semijoin=off,loosescan=off'; set optimizer_switch='default,semijoin=off,loosescan=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=off,materialization=on,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=off,materialization=on,in_to_exists=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch='default,materialization=off,loosescan=off'; set optimizer_switch='default,materialization=off,loosescan=off';
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=off,materialization=off,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=off,materialization=off,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off
set optimizer_switch=default; set optimizer_switch=default;
select @@optimizer_switch; select @@optimizer_switch;
@@optimizer_switch @@optimizer_switch
index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=off,derived_with_keys=off,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=off,semijoin_with_cache=off,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=off

3
mysql-test/r/ps.result
View File

@ -151,6 +151,8 @@ c32 set('monday', 'tuesday', 'wednesday')
create table t2 like t1; create table t2 like t1;
set @save_optimizer_switch=@@optimizer_switch; set @save_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off";
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
set @stmt= ' explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25 ' ; set @stmt= ' explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25 ' ;
prepare stmt1 from @stmt ; prepare stmt1 from @stmt ;
execute stmt1 ; execute stmt1 ;
@ -178,6 +180,7 @@ id select_type table type possible_keys key key_len ref rows Extra
3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 3 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables 2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
deallocate prepare stmt1; deallocate prepare stmt1;
set optimizer_switch=@tmp_optimizer_switch;
drop tables t1,t2; drop tables t1,t2;
set @@optimizer_switch=@save_optimizer_switch; set @@optimizer_switch=@save_optimizer_switch;
set @arg00=1; set @arg00=1;

6
mysql-test/r/subselect.result
View File

@ -201,6 +201,8 @@ select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
(select t3.a from t3 where a<8 order by 1 desc limit 1) a (select t3.a from t3 where a<8 order by 1 desc limit 1) a
7 2 7 2
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -209,6 +211,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort 2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort
Warnings: Warnings:
Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a a
2 2
@ -5536,10 +5539,13 @@ DROP TABLE parent, child;
CREATE TABLE t1 (a INT, b INT, INDEX (a)); CREATE TABLE t1 (a INT, b INT, INDEX (a));
INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20); INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t; EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED t1 ref a a 5 const 1 2 DERIVED t1 ref a a 5 const 1
set optimizer_switch=@tmp_optimizer_switch;
EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7); EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra

3
mysql-test/r/subselect3.result
View File

@ -1119,12 +1119,15 @@ a
set @@optimizer_switch=@save_optimizer_switch; set @@optimizer_switch=@save_optimizer_switch;
set @@optimizer_switch=@save_optimizer_switch; set @@optimizer_switch=@save_optimizer_switch;
set @@optimizer_switch='materialization=off'; set @@optimizer_switch='materialization=off';
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain select * from (select a from t0) X where a in (select a from t1); explain select * from (select a from t0) X where a in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11
1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using where; FirstMatch(<derived2>); Using join buffer (flat, BNL join) 1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using where; FirstMatch(<derived2>); Using join buffer (flat, BNL join)
2 DERIVED t0 ALL NULL NULL NULL NULL 11 2 DERIVED t0 ALL NULL NULL NULL NULL 11
drop table t0, t1; drop table t0, t1;
set optimizer_switch=@tmp_optimizer_switch;
create table t0 (a int); create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2)); create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2));

3
mysql-test/r/subselect3_jcl6.result
View File

@ -1128,12 +1128,15 @@ a
set @@optimizer_switch=@save_optimizer_switch; set @@optimizer_switch=@save_optimizer_switch;
set @@optimizer_switch=@save_optimizer_switch; set @@optimizer_switch=@save_optimizer_switch;
set @@optimizer_switch='materialization=off'; set @@optimizer_switch='materialization=off';
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain select * from (select a from t0) X where a in (select a from t1); explain select * from (select a from t0) X where a in (select a from t1);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 11
1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using where; FirstMatch(<derived2>); Using join buffer (flat, BNL join) 1 PRIMARY t1 ALL NULL NULL NULL NULL 20 Using where; FirstMatch(<derived2>); Using join buffer (flat, BNL join)
2 DERIVED t0 ALL NULL NULL NULL NULL 11 2 DERIVED t0 ALL NULL NULL NULL NULL 11
drop table t0, t1; drop table t0, t1;
set optimizer_switch=@tmp_optimizer_switch;
create table t0 (a int); create table t0 (a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9); insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2)); create table t1 (kp1 int, kp2 int, c int, filler char(100), key(kp1, kp2));

3
mysql-test/r/subselect_mat.result
View File

@ -1337,6 +1337,8 @@ DROP TABLE t1,t2,t3;
CREATE TABLE t1 (a INTEGER); CREATE TABLE t1 (a INTEGER);
CREATE TABLE t2 (b INTEGER); CREATE TABLE t2 (b INTEGER);
INSERT INTO t2 VALUES (1); INSERT INTO t2 VALUES (1);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain SELECT a FROM ( explain SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1) SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1; ) table1;
@ -1348,6 +1350,7 @@ SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1) SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1; ) table1;
a a
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1, t2; DROP TABLE t1, t2;
# End BUG#56367 # End BUG#56367
# #

6
mysql-test/r/subselect_mat_cost_bugs.result
View File

@ -156,6 +156,8 @@ drop table t1, t2, t3;
CREATE TABLE t2 ( f2 int(11)) ; CREATE TABLE t2 ( f2 int(11)) ;
CREATE TABLE t1 ( f3 int(11), KEY (f3)) ; CREATE TABLE t1 ( f3 int(11), KEY (f3)) ;
INSERT INTO t1 VALUES (6),(4); INSERT INTO t1 VALUES (6),(4);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXPLAIN
SELECT * FROM (SELECT * FROM t2) AS a2 SELECT * FROM (SELECT * FROM t2) AS a2
WHERE (SELECT distinct SUM(distinct f3 ) FROM t1); WHERE (SELECT distinct SUM(distinct f3 ) FROM t1);
@ -171,6 +173,7 @@ id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
3 SUBQUERY t1 index NULL f3 5 NULL 2 Using index 3 SUBQUERY t1 index NULL f3 5 NULL 2 Using index
2 DERIVED t2 ALL NULL NULL NULL NULL 2 2 DERIVED t2 ALL NULL NULL NULL NULL 2
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2; drop table t1,t2;
# #
# LP BUG#715027 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed # LP BUG#715027 Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' failed
@ -179,6 +182,8 @@ CREATE TABLE t1 ( f1 int(11), PRIMARY KEY (f1)) ;
INSERT INTO t1 VALUES (28),(29); INSERT INTO t1 VALUES (28),(29);
CREATE TABLE t2 ( f2 int(11), f3 int(11), f10 varchar(1)) ; CREATE TABLE t2 ( f2 int(11), f3 int(11), f10 varchar(1)) ;
INSERT INTO t2 VALUES (NULL,6,'f'),(4,2,'d'); INSERT INTO t2 VALUES (NULL,6,'f'),(4,2,'d');
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXPLAIN
SELECT alias2.f2 AS field1 SELECT alias2.f2 AS field1
FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1 FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1
@ -203,6 +208,7 @@ WHERE t1.f1 AND alias2.f10
) )
ORDER BY field1 ; ORDER BY field1 ;
field1 field1
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2; drop table t1,t2;
# #
# LP BUG#718578 Yet another Assertion `!table || # LP BUG#718578 Yet another Assertion `!table ||

6
mysql-test/r/subselect_no_mat.result
View File

@ -206,6 +206,8 @@ select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
(select t3.a from t3 where a<8 order by 1 desc limit 1) a (select t3.a from t3 where a<8 order by 1 desc limit 1) a
7 2 7 2
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -214,6 +216,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort 2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort
Warnings: Warnings:
Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a a
2 2
@ -5535,10 +5538,13 @@ DROP TABLE parent, child;
CREATE TABLE t1 (a INT, b INT, INDEX (a)); CREATE TABLE t1 (a INT, b INT, INDEX (a));
INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20); INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t; EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED t1 ref a a 5 const 1 2 DERIVED t1 ref a a 5 const 1
set optimizer_switch=@tmp_optimizer_switch;
EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7); EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra

6
mysql-test/r/subselect_no_opts.result
View File

@ -202,6 +202,8 @@ select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
(select t3.a from t3 where a<8 order by 1 desc limit 1) a (select t3.a from t3 where a<8 order by 1 desc limit 1) a
7 2 7 2
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -210,6 +212,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort 2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort
Warnings: Warnings:
Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a a
2 2
@ -5531,10 +5534,13 @@ DROP TABLE parent, child;
CREATE TABLE t1 (a INT, b INT, INDEX (a)); CREATE TABLE t1 (a INT, b INT, INDEX (a));
INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20); INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t; EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED t1 ref a a 5 const 1 2 DERIVED t1 ref a a 5 const 1
set optimizer_switch=@tmp_optimizer_switch;
EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7); EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra

6
mysql-test/r/subselect_no_scache.result
View File

@ -205,6 +205,8 @@ select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
(select t3.a from t3 where a<8 order by 1 desc limit 1) a (select t3.a from t3 where a<8 order by 1 desc limit 1) a
7 2 7 2
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -213,6 +215,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort 2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort
Warnings: Warnings:
Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a a
2 2
@ -5540,10 +5543,13 @@ DROP TABLE parent, child;
CREATE TABLE t1 (a INT, b INT, INDEX (a)); CREATE TABLE t1 (a INT, b INT, INDEX (a));
INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20); INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t; EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED t1 ref a a 5 const 1 2 DERIVED t1 ref a a 5 const 1
set optimizer_switch=@tmp_optimizer_switch;
EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7); EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra

6
mysql-test/r/subselect_no_semijoin.result
View File

@ -202,6 +202,8 @@ select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
(select t3.a from t3 where a<8 order by 1 desc limit 1) a (select t3.a from t3 where a<8 order by 1 desc limit 1) a
7 2 7 2
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -210,6 +212,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort 2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort
Warnings: Warnings:
Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a a
2 2
@ -5531,10 +5534,13 @@ DROP TABLE parent, child;
CREATE TABLE t1 (a INT, b INT, INDEX (a)); CREATE TABLE t1 (a INT, b INT, INDEX (a));
INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20); INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t; EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 2
2 DERIVED t1 ref a a 5 const 1 2 DERIVED t1 ref a a 5 const 1
set optimizer_switch=@tmp_optimizer_switch;
EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7); EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra

3
mysql-test/r/subselect_partial_match.result
View File

@ -766,6 +766,8 @@ CREATE TABLE t2 (b1 int DEFAULT NULL, b2 int DEFAULT NULL);
INSERT INTO t2 VALUES (6,NULL); INSERT INTO t2 VALUES (6,NULL);
INSERT INTO t2 VALUES (NULL,0); INSERT INTO t2 VALUES (NULL,0);
set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on'; set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on';
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1; SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -774,6 +776,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00 3 SUBQUERY t2 ALL NULL NULL NULL NULL 2 100.00
Warnings: Warnings:
Note 1003 select `table1`.`a1` AS `a1`,`table1`.`a2` AS `a2` from (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (not(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b2` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery3>`.`b2`)))))))) `table1` Note 1003 select `table1`.`a1` AS `a1`,`table1`.`a2` AS `a2` from (select `test`.`t1`.`a1` AS `a1`,`test`.`t1`.`a2` AS `a2` from `test`.`t1` where (not(<in_optimizer>(`test`.`t1`.`a1`,`test`.`t1`.`a1` in ( <materialize> (select `test`.`t2`.`b2` from `test`.`t2` ), <primary_index_lookup>(`test`.`t1`.`a1` in <temporary table> on distinct_key where ((`test`.`t1`.`a1` = `<subquery3>`.`b2`)))))))) `table1`
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1, t2; DROP TABLE t1, t2;
# #
# LP BUG#613009 Crash in Ordered_key::get_field_idx # LP BUG#613009 Crash in Ordered_key::get_field_idx

3
mysql-test/r/subselect_sj.result
View File

@ -1862,6 +1862,8 @@ INSERT INTO t2 VALUES (1,2,4,'22:34:09','v','v'),
(16,8,1,'02:57:29',NULL,NULL),(17,3,1,'16:46:13','r','r'), (16,8,1,'02:57:29',NULL,NULL),(17,3,1,'16:46:13','r','r'),
(18,3,9,'19:39:02','v','v'),(19,9,1,NULL,NULL,NULL), (18,3,9,'19:39:02','v','v'),(19,9,1,NULL,NULL,NULL),
(20,6,5,'20:58:33','r','r'); (20,6,5,'20:58:33','r','r');
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
SELECT SELECT
alias1.a, alias1.b, alias1.c, alias1.d, alias1.e, alias1.f, alias1.a, alias1.b, alias1.c, alias1.d, alias1.e, alias1.f,
@ -1897,6 +1899,7 @@ WHERE
alias1.c IN (SELECT SQ3_alias1.b alias1.c IN (SELECT SQ3_alias1.b
FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2) FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2)
LIMIT 100; LIMIT 100;
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2, t3; drop table t1,t2, t3;
set optimizer_switch=@tmp_830993; set optimizer_switch=@tmp_830993;
set join_buffer_size= @tmp_830993_jbs; set join_buffer_size= @tmp_830993_jbs;

3
mysql-test/r/subselect_sj_jcl6.result
View File

@ -1873,6 +1873,8 @@ INSERT INTO t2 VALUES (1,2,4,'22:34:09','v','v'),
(16,8,1,'02:57:29',NULL,NULL),(17,3,1,'16:46:13','r','r'), (16,8,1,'02:57:29',NULL,NULL),(17,3,1,'16:46:13','r','r'),
(18,3,9,'19:39:02','v','v'),(19,9,1,NULL,NULL,NULL), (18,3,9,'19:39:02','v','v'),(19,9,1,NULL,NULL,NULL),
(20,6,5,'20:58:33','r','r'); (20,6,5,'20:58:33','r','r');
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
SELECT SELECT
alias1.a, alias1.b, alias1.c, alias1.d, alias1.e, alias1.f, alias1.a, alias1.b, alias1.c, alias1.d, alias1.e, alias1.f,
@ -1908,6 +1910,7 @@ WHERE
alias1.c IN (SELECT SQ3_alias1.b alias1.c IN (SELECT SQ3_alias1.b
FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2) FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2)
LIMIT 100; LIMIT 100;
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2, t3; drop table t1,t2, t3;
set optimizer_switch=@tmp_830993; set optimizer_switch=@tmp_830993;
set join_buffer_size= @tmp_830993_jbs; set join_buffer_size= @tmp_830993_jbs;

3
mysql-test/r/subselect_sj_mat.result
View File

@ -1372,6 +1372,8 @@ DROP TABLE t1,t2,t3;
CREATE TABLE t1 (a INTEGER); CREATE TABLE t1 (a INTEGER);
CREATE TABLE t2 (b INTEGER); CREATE TABLE t2 (b INTEGER);
INSERT INTO t2 VALUES (1); INSERT INTO t2 VALUES (1);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain SELECT a FROM ( explain SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1) SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1; ) table1;
@ -1383,6 +1385,7 @@ SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1) SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1; ) table1;
a a
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1, t2; DROP TABLE t1, t2;
# End BUG#56367 # End BUG#56367
# #

6
mysql-test/suite/innodb/r/innodb_lock_wait_timeout_1.result
View File

@ -97,6 +97,8 @@ insert into t1 values (1,1), (2,null), (3,1), (4,1),
# Demonstrate that for the SELECT statement # Demonstrate that for the SELECT statement
# used later in the test JT_EQ_REF access method is used. # used later in the test JT_EQ_REF access method is used.
# #
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 2 as a, 1 as b union all select 1 from t1 natural join (select 2 as a, 1 as b union all
select 2 as a, 2 as b) as t2 for update; select 2 as a, 2 as b) as t2 for update;
@ -150,6 +152,7 @@ key_len NULL
ref NULL ref NULL
rows NULL rows NULL
Extra Extra
set optimizer_switch=@tmp_optimizer_switch;
# #
# Demonstrate that the reported SELECT statement # Demonstrate that the reported SELECT statement
# no longer produces warnings. # no longer produces warnings.
@ -301,6 +304,8 @@ begin;
# is retreived and processed first. # is retreived and processed first.
# #
# Verify that JT_EQ_REF is used. # Verify that JT_EQ_REF is used.
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 3 as a, 2 as b union all select 1 from t1 natural join (select 3 as a, 2 as b union all
select 3 as a, 1 as b) as t2 for update; select 3 as a, 1 as b) as t2 for update;
@ -354,6 +359,7 @@ key_len NULL
ref NULL ref NULL
rows NULL rows NULL
Extra Extra
set optimizer_switch=@tmp_optimizer_switch;
# Lock the record. # Lock the record.
select 1 from t1 natural join (select 3 as a, 2 as b union all select 1 from t1 natural join (select 3 as a, 2 as b union all
select 3 as a, 1 as b) as t2 for update; select 3 as a, 1 as b) as t2 for update;

6
mysql-test/suite/innodb/t/innodb_lock_wait_timeout_1.test
View File

@ -140,9 +140,12 @@ insert into t1 values (1,1), (2,null), (3,1), (4,1),
--echo # used later in the test JT_EQ_REF access method is used. --echo # used later in the test JT_EQ_REF access method is used.
--echo # --echo #
--vertical_results --vertical_results
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 2 as a, 1 as b union all select 1 from t1 natural join (select 2 as a, 1 as b union all
select 2 as a, 2 as b) as t2 for update; select 2 as a, 2 as b) as t2 for update;
set optimizer_switch=@tmp_optimizer_switch;
--horizontal_results --horizontal_results
--echo # --echo #
--echo # Demonstrate that the reported SELECT statement --echo # Demonstrate that the reported SELECT statement
@ -236,9 +239,12 @@ begin;
--echo # --echo #
--echo # Verify that JT_EQ_REF is used. --echo # Verify that JT_EQ_REF is used.
--vertical_results --vertical_results
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 3 as a, 2 as b union all select 1 from t1 natural join (select 3 as a, 2 as b union all
select 3 as a, 1 as b) as t2 for update; select 3 as a, 1 as b) as t2 for update;
set optimizer_switch=@tmp_optimizer_switch;
--horizontal_results --horizontal_results
--echo # Lock the record. --echo # Lock the record.
select 1 from t1 natural join (select 3 as a, 2 as b union all select 1 from t1 natural join (select 3 as a, 2 as b union all

2
mysql-test/suite/innodb_plugin/r/innodb_lock_wait_timeout_1.result
View File

@ -99,6 +99,7 @@ insert into t1 values (1,1), (2,null), (3,1), (4,1),
# #
set @tmp_optimizer_switch=@@optimizer_switch; set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='index_condition_pushdown=off'; set optimizer_switch='index_condition_pushdown=off';
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 2 as a, 1 as b union all select 1 from t1 natural join (select 2 as a, 1 as b union all
select 2 as a, 2 as b) as t2 for update; select 2 as a, 2 as b) as t2 for update;
@ -306,6 +307,7 @@ begin;
# Verify that JT_EQ_REF is used. # Verify that JT_EQ_REF is used.
set @tmp_optimizer_switch=@@optimizer_switch; set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='index_condition_pushdown=off'; set optimizer_switch='index_condition_pushdown=off';
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 3 as a, 2 as b union all select 1 from t1 natural join (select 3 as a, 2 as b union all
select 3 as a, 1 as b) as t2 for update; select 3 as a, 1 as b) as t2 for update;

2
mysql-test/suite/innodb_plugin/t/innodb_lock_wait_timeout_1.test
View File

@ -142,6 +142,7 @@ insert into t1 values (1,1), (2,null), (3,1), (4,1),
--vertical_results --vertical_results
set @tmp_optimizer_switch=@@optimizer_switch; set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='index_condition_pushdown=off'; set optimizer_switch='index_condition_pushdown=off';
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 2 as a, 1 as b union all select 1 from t1 natural join (select 2 as a, 1 as b union all
select 2 as a, 2 as b) as t2 for update; select 2 as a, 2 as b) as t2 for update;
@ -241,6 +242,7 @@ begin;
--vertical_results --vertical_results
set @tmp_optimizer_switch=@@optimizer_switch; set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='index_condition_pushdown=off'; set optimizer_switch='index_condition_pushdown=off';
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
select 1 from t1 natural join (select 3 as a, 2 as b union all select 1 from t1 natural join (select 3 as a, 2 as b union all
select 3 as a, 1 as b) as t2 for update; select 3 as a, 1 as b) as t2 for update;

4
mysql-test/suite/pbxt/r/derived.result
View File

@ -1,4 +1,6 @@
drop table if exists t1,t2,t3; drop table if exists t1,t2,t3;
set @save_derived_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select * from (select 2 from DUAL) b; select * from (select 2 from DUAL) b;
2 2
2 2
@ -208,6 +210,7 @@ create table t1 select 1 as a;
analyze table t1; analyze table t1;
Table Op Msg_type Msg_text Table Op Msg_type Msg_text
test.t1 analyze status OK test.t1 analyze status OK
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select 2 as a from (select * from t1) b; select 2 as a from (select * from t1) b;
ERROR 3D000: No database selected ERROR 3D000: No database selected
use test; use test;
@ -389,3 +392,4 @@ select t2.* from (select * from t1) as A inner join t2 on A.ID = t2.FID;
ID DATA FID ID DATA FID
drop table t1, t2; drop table t1, t2;
drop user mysqltest_1; drop user mysqltest_1;
set optimizer_switch=@save_derived_optimizer_switch;

3
mysql-test/suite/pbxt/r/subselect.result
View File

@ -196,6 +196,8 @@ select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
(select t3.a from t3 where a<8 order by 1 desc limit 1) a (select t3.a from t3 where a<8 order by 1 desc limit 1) a
7 2 7 2
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
id select_type table type possible_keys key key_len ref rows filtered Extra id select_type table type possible_keys key key_len ref rows filtered Extra
@ -204,6 +206,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort 2 SUBQUERY t3 ALL NULL NULL NULL NULL 3 100.00 Using where; Using filesort
Warnings: Warnings:
Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt` Note 1003 select (select `test`.`t3`.`a` from `test`.`t3` where (`test`.`t3`.`a` < 8) order by 1 desc limit 1) AS `(select t3.a from t3 where a<8 order by 1 desc limit 1)`,`tt`.`a` AS `a` from (select `test`.`t2`.`a` AS `a`,`test`.`t2`.`b` AS `b` from `test`.`t2` where (`test`.`t2`.`a` > 1)) `tt`
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
a a
2 2

6
mysql-test/suite/pbxt/t/derived.test
View File

@ -3,6 +3,9 @@
drop table if exists t1,t2,t3; drop table if exists t1,t2,t3;
--enable_warnings --enable_warnings
set @save_derived_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select * from (select 2 from DUAL) b; select * from (select 2 from DUAL) b;
-- error 1054 -- error 1054
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b; SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
@ -107,6 +110,7 @@ create table t1 select 1 as a;
analyze table t1; # PBXT: Required to get a consitent result analyze table t1; # PBXT: Required to get a consitent result
connect (con1,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK); connect (con1,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK);
connection con1; connection con1;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
--error 1046 --error 1046
select 2 as a from (select * from t1) b; select 2 as a from (select * from t1) b;
use test; use test;
@ -283,3 +287,5 @@ drop user mysqltest_1;
drop database pbxt; drop database pbxt;
--enable_query_log --enable_query_log
# End of 4.1 tests # End of 4.1 tests
set optimizer_switch=@save_derived_optimizer_switch;

3
mysql-test/suite/pbxt/t/subselect.test
View File

@ -80,8 +80,11 @@ explain extended (select * from t2 where t2.b=(select a from t3 order by 1 desc
select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2; select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1);
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1);

6
mysql-test/suite/vcol/inc/vcol_select.inc
View File

@ -84,10 +84,16 @@ eval $s;
eval explain $s; eval explain $s;
--echo # select_type=DERIVED, type=system --echo # select_type=DERIVED, type=system
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
let $s = select * from (select a,b,c from t1) as t11; let $s = select * from (select a,b,c from t1) as t11;
eval $s; eval $s;
eval explain $s; eval explain $s;
set optimizer_switch=@tmp_optimizer_switch;
--echo ### --echo ###
--echo ### Using aggregate functions with/without DISTINCT --echo ### Using aggregate functions with/without DISTINCT
--echo ### --echo ###

3
mysql-test/suite/vcol/r/vcol_select_innodb.result
View File

@ -89,6 +89,8 @@ id select_type table type possible_keys key key_len ref rows Extra
2 UNION t2 ALL NULL NULL NULL NULL 1 2 UNION t2 ALL NULL NULL NULL NULL 1
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
# select_type=DERIVED, type=system # select_type=DERIVED, type=system
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select * from (select a,b,c from t1) as t11; select * from (select a,b,c from t1) as t11;
a b c a b c
2 -2 -2 2 -2 -2
@ -100,6 +102,7 @@ explain select * from (select a,b,c from t1) as t11;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 5 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 5
2 DERIVED t1 ALL NULL NULL NULL NULL 5 2 DERIVED t1 ALL NULL NULL NULL NULL 5
set optimizer_switch=@tmp_optimizer_switch;
### ###
### Using aggregate functions with/without DISTINCT ### Using aggregate functions with/without DISTINCT
### ###

3
mysql-test/suite/vcol/r/vcol_select_myisam.result
View File

@ -89,6 +89,8 @@ id select_type table type possible_keys key key_len ref rows Extra
2 UNION t2 system NULL NULL NULL NULL 1 2 UNION t2 system NULL NULL NULL NULL 1
NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL NULL UNION RESULT <union1,2> ALL NULL NULL NULL NULL NULL
# select_type=DERIVED, type=system # select_type=DERIVED, type=system
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select * from (select a,b,c from t1) as t11; select * from (select a,b,c from t1) as t11;
a b c a b c
2 -2 -2 2 -2 -2
@ -100,6 +102,7 @@ explain select * from (select a,b,c from t1) as t11;
id select_type table type possible_keys key key_len ref rows Extra id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY <derived2> ALL NULL NULL NULL NULL 5 1 PRIMARY <derived2> ALL NULL NULL NULL NULL 5
2 DERIVED t1 ALL NULL NULL NULL NULL 5 2 DERIVED t1 ALL NULL NULL NULL NULL 5
set optimizer_switch=@tmp_optimizer_switch;
### ###
### Using aggregate functions with/without DISTINCT ### Using aggregate functions with/without DISTINCT
### ###

6
mysql-test/t/derived.test
View File

@ -3,6 +3,9 @@
drop table if exists t1,t2,t3; drop table if exists t1,t2,t3;
--enable_warnings --enable_warnings
set @save_derived_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
select * from (select 2 from DUAL) b; select * from (select 2 from DUAL) b;
-- error 1054 -- error 1054
SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b; SELECT 1 as a FROM (SELECT 1 UNION SELECT a) b;
@ -106,6 +109,7 @@ create user mysqltest_1;
create table t1 select 1 as a; create table t1 select 1 as a;
connect (con1,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK); connect (con1,localhost,mysqltest_1,,*NO-ONE*,$MASTER_MYPORT,$MASTER_MYSOCK);
connection con1; connection con1;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
--error 1046 --error 1046
select 2 as a from (select * from t1) b; select 2 as a from (select * from t1) b;
use test; use test;
@ -315,3 +319,5 @@ WHERE j = SUBSTRING('12', (SELECT * FROM (SELECT MIN(j) FROM t1) t2))) t3;
DROP TABLE t1; DROP TABLE t1;
--echo # End of 5.0 tests --echo # End of 5.0 tests
set optimizer_switch=@save_derived_optimizer_switch;

3
mysql-test/t/explain.test
View File

@ -279,8 +279,11 @@ CREATE TABLE t1 (a int) ;
CREATE TABLE t2 (a int) ; CREATE TABLE t2 (a int) ;
INSERT INTO t2 VALUES (8); INSERT INTO t2 VALUES (8);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT * FROM ( SELECT t1.a FROM t1,t2 WHERE t2.a = t1.a ) AS t; SELECT * FROM ( SELECT t1.a FROM t1,t2 WHERE t2.a = t1.a ) AS t;
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1,t2; DROP TABLE t1,t2;

3
mysql-test/t/func_group.test
View File

@ -1250,12 +1250,15 @@ SELECT v
FROM t2); FROM t2);
--echo --echo
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXPLAIN
SELECT MIN(a) SELECT MIN(a)
FROM (SELECT a FROM empty1) tt FROM (SELECT a FROM empty1) tt
HAVING ('m') IN ( HAVING ('m') IN (
SELECT v SELECT v
FROM t2); FROM t2);
set optimizer_switch=@tmp_optimizer_switch;
--echo --echo
--echo # --echo #

6
mysql-test/t/func_str.test
View File

@ -1314,9 +1314,13 @@ DROP TABLE t1, t2;
drop table if exists t1; drop table if exists t1;
--enable_warnings --enable_warnings
create table t1(f1 tinyint default null)engine=myisam; create table t1(f1 tinyint default null)engine=myisam;
insert into t1 values (-1),(null); insert into t1 values (-1),(null);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain select 1 as a from t1,(select decode(f1,f1) as b from t1) a; explain select 1 as a from t1,(select decode(f1,f1) as b from t1) a;
explain select 1 as a from t1,(select encode(f1,f1) as b from t1) a; explain select 1 as a from t1,(select encode(f1,f1) as b from t1) a;
set optimizer_switch=@tmp_optimizer_switch;
drop table t1; drop table t1;
--echo # --echo #

3
mysql-test/t/index_merge_innodb.test
View File

@ -68,6 +68,8 @@ INSERT INTO t1(a,b) SELECT a,b FROM t1;
INSERT INTO t1 VALUES (1000000, 0, 0); INSERT INTO t1 VALUES (1000000, 0, 0);
SET SESSION sort_buffer_size = 1024*36; SET SESSION sort_buffer_size = 1024*36;
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
# We have to use FORCE INDEX here as Innodb gives inconsistent estimates # We have to use FORCE INDEX here as Innodb gives inconsistent estimates
# which causes different query plans. # which causes different query plans.
@ -89,6 +91,7 @@ SELECT COUNT(*) FROM
WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t; WHERE a BETWEEN 2 AND 7 OR pk=1000000) AS t;
DROP TABLE t1; DROP TABLE t1;
set optimizer_switch=@tmp_optimizer_switch;
--echo # --echo #
--echo # Testcase Backport: BUG#48093: 6.0 Server not processing equivalent IN clauses properly --echo # Testcase Backport: BUG#48093: 6.0 Server not processing equivalent IN clauses properly

3
mysql-test/t/information_schema.test
View File

@ -962,6 +962,8 @@ DROP FUNCTION get_value;
# #
# Bug#22413 EXPLAIN SELECT FROM view with ORDER BY yield server crash # Bug#22413 EXPLAIN SELECT FROM view with ORDER BY yield server crash
# #
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
create view v1 as create view v1 as
select table_schema as object_schema, select table_schema as object_schema,
table_name as object_name, table_name as object_name,
@ -970,6 +972,7 @@ from information_schema.tables
order by object_schema; order by object_schema;
explain select * from v1; explain select * from v1;
explain select * from (select table_name from information_schema.tables) as a; explain select * from (select table_name from information_schema.tables) as a;
set optimizer_switch=@tmp_optimizer_switch;
drop view v1; drop view v1;
# #

6
mysql-test/t/ps.test
View File

@ -166,12 +166,18 @@ create table t2 like t1;
set @save_optimizer_switch=@@optimizer_switch; set @save_optimizer_switch=@@optimizer_switch;
set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off"; set @@optimizer_switch="partial_match_rowid_merge=off,partial_match_table_scan=off";
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
set @stmt= ' explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25 ' ; set @stmt= ' explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25 ' ;
prepare stmt1 from @stmt ; prepare stmt1 from @stmt ;
execute stmt1 ; execute stmt1 ;
execute stmt1 ; execute stmt1 ;
explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25; explain SELECT (SELECT SUM(c1 + c12 + 0.0) FROM t2 where (t1.c2 - 0e-3) = t2.c2 GROUP BY t1.c15 LIMIT 1) as scalar_s, exists (select 1.0e+0 from t2 where t2.c3 * 9.0000000000 = t1.c4) as exists_s, c5 * 4 in (select c6 + 0.3e+1 from t2) as in_s, (c7 - 4, c8 - 4) in (select c9 + 4.0, c10 + 40e-1 from t2) as in_row_s FROM t1, (select c25 x, c32 y from t2) tt WHERE x * 1 = c25;
deallocate prepare stmt1; deallocate prepare stmt1;
set optimizer_switch=@tmp_optimizer_switch;
drop tables t1,t2; drop tables t1,t2;
set @@optimizer_switch=@save_optimizer_switch; set @@optimizer_switch=@save_optimizer_switch;

6
mysql-test/t/subselect.test
View File

@ -94,8 +94,11 @@ explain extended (select * from t2 where t2.b=(select a from t3 order by 1 desc
select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2; select (select a from t3 where a<t2.a*4 order by 1 desc limit 1), a from t2;
select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from explain extended select (select t3.a from t3 where a<8 order by 1 desc limit 1), a from
(select * from t2 where a>1) as tt; (select * from t2 where a>1) as tt;
set optimizer_switch=@tmp_optimizer_switch;
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3) order by 1 desc limit 1);
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a > t1.a) order by 1 desc limit 1);
select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1); select * from t1 where t1.a=(select t2.a from t2 where t2.b=(select max(a) from t3 where t3.a < t1.a) order by 1 desc limit 1);
@ -4648,7 +4651,10 @@ CREATE TABLE t1 (a INT, b INT, INDEX (a));
INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20); INSERT INTO t1 VALUES (3, 10), (2, 20), (7, 10), (5, 20);
--echo --echo
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t; EXPLAIN SELECT * FROM (SELECT * FROM t1 WHERE a=7) t;
set optimizer_switch=@tmp_optimizer_switch;
--echo --echo
EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7); EXPLAIN SELECT * FROM t1 WHERE EXISTS (SELECT * FROM t1 WHERE a=7);

3
mysql-test/t/subselect3.test
View File

@ -925,8 +925,11 @@ set @@optimizer_switch='materialization=off';
# #
# FirstMatch referring to a derived table # FirstMatch referring to a derived table
# #
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain select * from (select a from t0) X where a in (select a from t1); explain select * from (select a from t0) X where a in (select a from t1);
drop table t0, t1; drop table t0, t1;
set optimizer_switch=@tmp_optimizer_switch;
# #
# LooseScan: Check if we can pick it together with range access # LooseScan: Check if we can pick it together with range access

8
mysql-test/t/subselect_mat_cost_bugs.test
View File

@ -183,6 +183,9 @@ CREATE TABLE t2 ( f2 int(11)) ;
CREATE TABLE t1 ( f3 int(11), KEY (f3)) ; CREATE TABLE t1 ( f3 int(11), KEY (f3)) ;
INSERT INTO t1 VALUES (6),(4); INSERT INTO t1 VALUES (6),(4);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXPLAIN
SELECT * FROM (SELECT * FROM t2) AS a2 SELECT * FROM (SELECT * FROM t2) AS a2
WHERE (SELECT distinct SUM(distinct f3 ) FROM t1); WHERE (SELECT distinct SUM(distinct f3 ) FROM t1);
@ -192,6 +195,7 @@ EXPLAIN
SELECT * FROM (SELECT * FROM t2) AS a2 SELECT * FROM (SELECT * FROM t2) AS a2
WHERE (SELECT distinct SUM(distinct f3 ) FROM t1); WHERE (SELECT distinct SUM(distinct f3 ) FROM t1);
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2; drop table t1,t2;
--echo # --echo #
@ -204,6 +208,9 @@ INSERT INTO t1 VALUES (28),(29);
CREATE TABLE t2 ( f2 int(11), f3 int(11), f10 varchar(1)) ; CREATE TABLE t2 ( f2 int(11), f3 int(11), f10 varchar(1)) ;
INSERT INTO t2 VALUES (NULL,6,'f'),(4,2,'d'); INSERT INTO t2 VALUES (NULL,6,'f'),(4,2,'d');
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXPLAIN
SELECT alias2.f2 AS field1 SELECT alias2.f2 AS field1
FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1 FROM t1 AS alias1 JOIN ( SELECT * FROM t2 ) AS alias2 ON alias2.f3 = alias1.f1
@ -223,6 +230,7 @@ WHERE (
) )
ORDER BY field1 ; ORDER BY field1 ;
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2; drop table t1,t2;
--echo # --echo #

3
mysql-test/t/subselect_partial_match.test
View File

@ -622,8 +622,11 @@ INSERT INTO t2 VALUES (NULL,0);
set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on'; set @@optimizer_switch='materialization=on,semijoin=off,partial_match_rowid_merge=on,partial_match_table_scan=on';
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
EXPLAIN EXTENDED EXPLAIN EXTENDED
SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1; SELECT * FROM (SELECT * FROM t1 WHERE a1 NOT IN (SELECT b2 FROM t2)) table1;
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1, t2; DROP TABLE t1, t2;

5
mysql-test/t/subselect_sj.test
View File

@ -1690,6 +1690,9 @@ INSERT INTO t2 VALUES (1,2,4,'22:34:09','v','v'),
(18,3,9,'19:39:02','v','v'),(19,9,1,NULL,NULL,NULL), (18,3,9,'19:39:02','v','v'),(19,9,1,NULL,NULL,NULL),
(20,6,5,'20:58:33','r','r'); (20,6,5,'20:58:33','r','r');
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
explain explain
SELECT SELECT
alias1.a, alias1.b, alias1.c, alias1.d, alias1.e, alias1.f, alias1.a, alias1.b, alias1.c, alias1.d, alias1.e, alias1.f,
@ -1720,6 +1723,8 @@ WHERE
FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2) FROM t2 AS SQ3_alias1 STRAIGHT_JOIN t2 AS SQ3_alias2)
LIMIT 100; LIMIT 100;
set optimizer_switch=@tmp_optimizer_switch;
drop table t1,t2, t3; drop table t1,t2, t3;
set optimizer_switch=@tmp_830993; set optimizer_switch=@tmp_830993;
set join_buffer_size= @tmp_830993_jbs; set join_buffer_size= @tmp_830993_jbs;

3
mysql-test/t/subselect_sj_mat.test
View File

@ -1022,12 +1022,15 @@ CREATE TABLE t1 (a INTEGER);
CREATE TABLE t2 (b INTEGER); CREATE TABLE t2 (b INTEGER);
INSERT INTO t2 VALUES (1); INSERT INTO t2 VALUES (1);
set @tmp_optimizer_switch=@@optimizer_switch;
set optimizer_switch='derived_merge=off,derived_with_keys=off';
let $query = let $query =
SELECT a FROM ( SELECT a FROM (
SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1) SELECT t1.* FROM t1 LEFT JOIN t2 ON t1.a > 3 OR t2.b IN (SELECT a FROM t1)
) table1; ) table1;
eval explain $query; eval explain $query;
eval $query; eval $query;
set optimizer_switch=@tmp_optimizer_switch;
DROP TABLE t1, t2; DROP TABLE t1, t2;

2
sql/mysql_priv.h
View File

@ -598,6 +598,8 @@ protected:
OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION | \ OPTIMIZER_SWITCH_INDEX_MERGE_SORT_UNION | \
OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT | \ OPTIMIZER_SWITCH_INDEX_MERGE_INTERSECT | \
OPTIMIZER_SWITCH_INDEX_COND_PUSHDOWN | \ OPTIMIZER_SWITCH_INDEX_COND_PUSHDOWN | \
OPTIMIZER_SWITCH_DERIVED_MERGE | \
OPTIMIZER_SWITCH_DERIVED_WITH_KEYS | \
OPTIMIZER_SWITCH_TABLE_ELIMINATION | \ OPTIMIZER_SWITCH_TABLE_ELIMINATION | \
OPTIMIZER_SWITCH_IN_TO_EXISTS | \ OPTIMIZER_SWITCH_IN_TO_EXISTS | \
OPTIMIZER_SWITCH_MATERIALIZATION | \ OPTIMIZER_SWITCH_MATERIALIZATION | \

4
sql/mysqld.cc
View File

@ -482,8 +482,8 @@ static const char *optimizer_switch_str="index_merge=on,index_merge_union=on,"
"index_merge_intersection=on," "index_merge_intersection=on,"
"index_merge_sort_intersection=off," "index_merge_sort_intersection=off,"
"index_condition_pushdown=on," "index_condition_pushdown=on,"
"derived_merge=off," "derived_merge=on,"
"derived_with_keys=off," "derived_with_keys=on,"
"firstmatch=on," "firstmatch=on,"
"loosescan=on," "loosescan=on,"
"materialization=on," "materialization=on,"