2
SET @session_max_join_size = @@SESSION.sql_max_join_size;
3
SET @global_max_join_size = @@GLOBAL.sql_max_join_size;
4
SET @session_sql_big_selects = @@SESSION.sql_big_selects;
5
CREATE TEMPORARY TABLE t1(a varchar(20) not null, b varchar(20));
6
CREATE TEMPORARY TABLE t2(a varchar(20) null, b varchar(20));
7
INSERT INTO t1 VALUES('aa','bb');
8
INSERT INTO t1 VALUES('aa1','bb');
9
INSERT INTO t1 VALUES('aa2','bb');
10
INSERT INTO t1 VALUES('aa3','bb');
11
INSERT INTO t1 VALUES('aa4','bb');
12
INSERT INTO t2 VALUES('aa','bb');
13
INSERT INTO t2 VALUES('aa1','bb');
14
INSERT INTO t2 VALUES('aa2','bb');
15
INSERT INTO t2 VALUES('aa3','bb');
16
INSERT INTO t2 VALUES('aa4','bb');
17
'#--------------------FN_DYNVARS_161_01-------------------------#'
18
SET SESSION sql_max_join_size=9;
19
SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
20
ERROR 42000: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET SQL_MAX_JOIN_SIZE=# if the SELECT is okay
21
Expected error The SELECT would examine more than MAX_JOIN_SIZE rows.
22
'#--------------------FN_DYNVARS_161_02-------------------------#'
23
SET SESSION SQL_BIG_SELECTS = 1;
24
SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
32
SET SESSION sql_max_join_size=DEFAULT;
33
DELETE FROM t2 WHERE a = 'aa4';
34
SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
41
'#----------------------------FN_DYNVARS_136_05-------------------------#'
42
SET GLOBAL sql_max_join_size = 4;
43
** Connecting con_int1 using root **
44
** Connection con_int1 **
45
SELECT @@SESSION.sql_max_join_size;
46
@@SESSION.sql_max_join_size
49
SET SESSION sql_max_join_size = 2;
50
** Connecting con_int2 using root **
51
** Connection con_int2 **
52
SELECT @@SESSION.sql_max_join_size;
53
@@SESSION.sql_max_join_size
56
SET SESSION sql_max_join_size = 10;
57
** Connection con_int2 **
58
SELECT @@SESSION.sql_max_join_size;
59
@@SESSION.sql_max_join_size
62
** Connection con_int1 **
63
SELECT @@SESSION.sql_max_join_size;
64
@@SESSION.sql_max_join_size
67
SELECT @@GLOBAL.sql_max_join_size;
68
@@GLOBAL.sql_max_join_size
71
** Connection default **
72
Disconnecting Connections con_int1, con_int2
73
SET @@SESSION.sql_max_join_size = @session_max_join_size;
74
SET @@GLOBAL.sql_max_join_size = @global_max_join_size ;
75
SET @@SESSION.sql_big_selects = @session_sql_big_selects;