SET @old_innodb_enable_xap_unlock_unmodified_for_primary_debug=
@@GLOBAL.innodb_enable_xap_unlock_unmodified_for_primary_debug;
SET GLOBAL innodb_enable_xap_unlock_unmodified_for_primary_debug= 1;
BEGIN NOT ATOMIC
DECLARE c TEXT DEFAULT(
SELECT CONCAT(
'CREATE TABLE t1(pk',
GROUP_CONCAT(seq SEPARATOR ' INT, pk'), ' INT, a',
GROUP_CONCAT(seq SEPARATOR ' INT, a'), ' INT, b',
GROUP_CONCAT(seq SEPARATOR ' INT, b'), ' INT, c INT, PRIMARY KEY(pk',
GROUP_CONCAT(seq SEPARATOR ', pk'), '), INDEX i1(a',
GROUP_CONCAT(seq SEPARATOR ', a'), '), INDEX i2(b',
GROUP_CONCAT(seq SEPARATOR ', b'), ')) ENGINE=InnoDB;')
FROM seq_1_to_32);
EXECUTE IMMEDIATE c;
END;
$$
BEGIN NOT ATOMIC
DECLARE c TEXT DEFAULT(
SELECT CONCAT(
'INSERT INTO t1 VALUES (',
GROUP_CONCAT('1' SEPARATOR ','), ',',
GROUP_CONCAT('1' SEPARATOR ','), ',',
GROUP_CONCAT('1' SEPARATOR ','), ',0), (',
GROUP_CONCAT('2' SEPARATOR ','), ',',
GROUP_CONCAT('1' SEPARATOR ','), ',',
GROUP_CONCAT('2' SEPARATOR ','), ',0), (',
GROUP_CONCAT('3' SEPARATOR ','), ',',
GROUP_CONCAT('2' SEPARATOR ','), ',',
GROUP_CONCAT('1' SEPARATOR ','), ',0), (',
GROUP_CONCAT('4' SEPARATOR ','), ',',
GROUP_CONCAT('2' SEPARATOR ','), ',',
GROUP_CONCAT('2' SEPARATOR ','), ',0);')
FROM seq_1_to_32);
EXECUTE IMMEDIATE c;
END;
$$
SET @old_timeout= @@GLOBAL.innodb_lock_wait_timeout;
SET GLOBAL innodb_lock_wait_timeout= 1;
XA START "t1";
UPDATE t1 FORCE INDEX (i2) SET c=c+1 WHERE a1=1 AND b1=1;
XA END "t1";
XA PREPARE "t1";
connect con1,localhost,root,,;
SELECT a1, b1, c  FROM t1 FORCE INDEX (i1) WHERE a1=2 AND b1=1 FOR UPDATE;
a1	b1	c
2	1	0
disconnect con1;
connection default;
XA COMMIT "t1";
SET GLOBAL innodb_enable_xap_unlock_unmodified_for_primary_debug=
@old_innodb_enable_xap_unlock_unmodified_for_primary_debug;
SET GLOBAL innodb_lock_wait_timeout= @old_timeout;
BEGIN NOT ATOMIC
DECLARE c TEXT DEFAULT(
SELECT CONCAT(
'ALTER TABLE t1 ADD COLUMN d',
GROUP_CONCAT(seq SEPARATOR ' INT, ADD COLUMN d'),
' INT, ADD INDEX i3(d',
GROUP_CONCAT(seq SEPARATOR ', d'), ');')
FROM seq_1_to_33);
EXECUTE IMMEDIATE c;
END;
$$
ERROR 42000: Too many key parts specified; max 32 parts allowed
DROP TABLE t1;