CREATE TABLE t1(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t3(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t4(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t5(a TINYINT UNSIGNED AUTO_INCREMENT PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t6(a SERIAL, b INT) ENGINE=InnoDB;
CREATE FUNCTION p1() RETURNS INT
BEGIN
INSERT INTO t1() VALUES();
INSERT INTO t2() VALUES();
INSERT INTO t3() VALUES();
INSERT INTO t4() VALUES();
INSERT INTO t5() VALUES();
RETURN 1;
END$$
INSERT INTO t6(b) SELECT p1();
UPDATE t1,t2,t3,t4,t5 SET t1.a=2,t2.a=2,t3.a=2,t4.a=2,t5.a=2;
SELECT * FROM t1;
a
2
connect con1,localhost,root,,;
connect con2,localhost,root,,;
connect con3,localhost,root,,;
connection con1;
INSERT INTO t6(b) SELECT SLEEP(p1());
connection con2;
INSERT INTO t6(b) SELECT SLEEP(p1());
connection con3;
UPDATE t1,t2,t3,t4,t5 SET t1.a=0,t2.a=0,t3.a=0,t4.a=0,t5.a=0
WHERE t1.a=2 AND t2.a=2 AND t3.a=2 AND t4.a=2 AND t5.a=2;
connection default;
KILL QUERY $ID1;
KILL QUERY $ID2;
KILL QUERY $ID3;
connection con1;
disconnect con1;
connection con2;
disconnect con2;
connection con3;
disconnect con3;
connection default;
DROP FUNCTION p1;
DROP TABLE t1,t2,t3,t4,t5,t6;