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76 lines
2.3 KiB
Plaintext
76 lines
2.3 KiB
Plaintext
** Setup **
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SET @session_sql_big_selects = @@SESSION.sql_big_selects;
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SET @session_max_join_size = @@SESSION.max_join_size;
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SET @global_max_join_size = @@GLOBAL.max_join_size;
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SET MAX_JOIN_SIZE=9;
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CREATE TEMPORARY TABLE t1(a varchar(20) not null, b varchar(20));
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CREATE TEMPORARY TABLE t2(a varchar(20) null, b varchar(20));
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INSERT INTO t1 VALUES('aa','bb');
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INSERT INTO t1 VALUES('aa1','bb');
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INSERT INTO t1 VALUES('aa2','bb');
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INSERT INTO t1 VALUES('aa3','bb');
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INSERT INTO t1 VALUES('aa4','bb');
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INSERT INTO t2 VALUES('aa','bb');
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INSERT INTO t2 VALUES('aa1','bb');
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INSERT INTO t2 VALUES('aa2','bb');
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INSERT INTO t2 VALUES('aa3','bb');
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INSERT INTO t2 VALUES('aa4','bb');
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'#--------------------FN_DYNVARS_154_01-------------------------#'
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Expected error "Too big select"
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SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
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ERROR 42000: The SELECT would examine more than MAX_JOIN_SIZE rows; check your WHERE and use SET SQL_BIG_SELECTS=1 or SET MAX_JOIN_SIZE=# if the SELECT is okay
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Expected error The SELECT would examine more than MAX_JOIN_SIZE rows.
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'#--------------------FN_DYNVARS_154_02-------------------------#'
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SET SESSION SQL_BIG_SELECTS = 1;
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SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
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a b a b
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aa bb aa bb
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aa1 bb aa1 bb
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aa2 bb aa2 bb
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aa3 bb aa3 bb
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aa4 bb aa4 bb
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This should work
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SET SESSION SQL_BIG_SELECTS = 0;
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DELETE FROM t2 WHERE a = 'aa4';
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SELECT * FROM t1 INNER JOIN t2 ON t1.a = t2.a;
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a b a b
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aa bb aa bb
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aa1 bb aa1 bb
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aa2 bb aa2 bb
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aa3 bb aa3 bb
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This should work
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'#--------------------FN_DYNVARS_154_03-------------------------#'
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connect con_int1,localhost,root,,;
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connection con_int1;
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SELECT @@SESSION.sql_big_selects;
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@@SESSION.sql_big_selects
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1
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1 Expected
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SET SESSION sql_big_selects = 0;
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connect con_int2,localhost,root,,;
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connection con_int2;
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SELECT @@SESSION.sql_big_selects;
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@@SESSION.sql_big_selects
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1
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1 Expected
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SET SESSION sql_big_selects = 1;
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connection con_int1;
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SELECT @@SESSION.sql_big_selects;
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@@SESSION.sql_big_selects
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0
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0 Expected
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connection con_int2;
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SELECT @@SESSION.sql_big_selects;
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@@SESSION.sql_big_selects
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1
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1 Expected
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connection default;
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disconnect con_int1;
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disconnect con_int2;
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SET @@SESSION.sql_big_selects = @session_sql_big_selects;
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SET @@SESSION.max_join_size = @session_max_join_size;
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SET @@GLOBAL.max_join_size = @global_max_join_size;
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DROP TABLE t1;
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DROP TABLE t2;
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