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# MDEV-28217 Incorrect Join Execution When Controlling Join Buffer Size
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CREATE TABLE t1 (i int PRIMARY KEY)engine=innodb;
INSERT INTO t1 VALUES (1332945389);
CREATE TABLE t2 (i int PRIMARY KEY)engine=innodb;
INSERT INTO t2 VALUES (1180244875), (1951338178);
SET SESSION join_buffer_size= X;
Warnings:
Warning	X	Truncated incorrect join_buffer_size value: 'X'
SET SESSION join_cache_level = 4;
SET optimizer_switch='optimize_join_buffer_size=on';
SELECT t2.i FROM t2  LEFT  JOIN t1 ON t1.i = t2.i  WHERE t1.i;
i
SET optimizer_switch='optimize_join_buffer_size=off';
SELECT t1.i,t2.i FROM t2  LEFT  JOIN t1 ON t1.i = t2.i  WHERE t1.i;
ERROR HYX: Could not create a join buffer. Please check and adjust the value of the variables 'JOIN_BUFFER_SIZE (X)' and 'JOIN_BUFFER_SPACE_LIMIT (X)'
SET SESSION join_buffer_size= 10000000;
SELECT t1.i,t2.i FROM t2  LEFT  JOIN t1 ON t1.i = t2.i  WHERE t1.i;
i	i
SET SESSION optimizer_switch= default;
SET SESSION join_buffer_size= default;
SET SESSION join_cache_level= default;
drop table t1,t2;
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# End of 10.4 tests
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