mirror of
https://github.com/MariaDB/server.git
synced 2025-08-01 03:47:19 +03:00
5.3 merge
This commit is contained in:
@ -151,6 +151,8 @@ c32 set('monday', 'tuesday', 'wednesday')
|
||||
create table t2 like t1;
|
||||
set @save_optimizer_switch=@@optimizer_switch;
|
||||
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 ' ;
|
||||
prepare stmt1 from @stmt ;
|
||||
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
|
||||
2 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
|
||||
deallocate prepare stmt1;
|
||||
set optimizer_switch=@tmp_optimizer_switch;
|
||||
drop tables t1,t2;
|
||||
set @@optimizer_switch=@save_optimizer_switch;
|
||||
set @arg00=1;
|
||||
@ -3013,6 +3016,8 @@ DROP TABLE t1;
|
||||
#
|
||||
CREATE TABLE t1(a INT);
|
||||
INSERT INTO t1 VALUES (1),(2);
|
||||
SET @save_optimizer_switch=@@optimizer_switch;
|
||||
SET optimizer_switch='outer_join_with_cache=off';
|
||||
PREPARE stmt FROM 'EXPLAIN EXTENDED SELECT 1 FROM t1 RIGHT JOIN t1 t2 ON 1';
|
||||
EXECUTE stmt;
|
||||
id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
@ -3027,6 +3032,7 @@ id select_type table type possible_keys key key_len ref rows filtered Extra
|
||||
Warnings:
|
||||
Note 1003 select 1 AS `1` from `test`.`t1` `t2` left join `test`.`t1` on(1) where 1
|
||||
DEALLOCATE PREPARE stmt;
|
||||
SET optimizer_switch=@save_optimizer_switch;
|
||||
DROP TABLE t1;
|
||||
#
|
||||
# Bug#54488 crash when using explain and prepared statements with subqueries
|
||||
|
Reference in New Issue
Block a user