Edit File: innodb_bug42419.result
CREATE TABLE t1 (a INT AUTO_INCREMENT PRIMARY KEY, b INT) ENGINE = InnoDB; INSERT INTO t1 VALUES (1,1),(2,2),(3,3); COMMIT; SET AUTOCOMMIT = 0; CREATE TEMPORARY TABLE t1_tmp ( b INT ); INSERT INTO t1_tmp (b) SELECT b FROM t1 WHERE a = 3; INSERT INTO t1_tmp (b) SELECT b FROM t1 WHERE a = 2; SET AUTOCOMMIT = 0; CREATE TEMPORARY TABLE t2_tmp ( a int, new_a int ); INSERT INTO t2_tmp VALUES (1,51),(2,52),(3,53); UPDATE t1 SET a = (SELECT new_a FROM t2_tmp WHERE t2_tmp.a = t1.a) WHERE a = 1; UPDATE t1 SET a = (SELECT new_a FROM t2_tmp WHERE t2_tmp.a = t1.a) WHERE a = 2; INSERT INTO t1_tmp (b) SELECT b FROM t1 WHERE a = 1; ERROR 40001: Deadlock found when trying to get lock; try restarting transaction Reap the server message for connection user2 UPDATE t1 ... UPDATE t1 SET a = (SELECT new_a FROM t2_tmp WHERE t2_tmp.a = t1.a) WHERE a = 3; DROP TABLE t1;
Back to File Manager