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# Scenario: # T1=({R(PARENT), W(PARENT)}) # T2=({R(CHILD), W(CHILD), C}, HIGH_PRIORITY). # # Outcome: T1 must abort, T2 must commit. --source include/have_innodb.inc --source include/count_sessions.inc CREATE TABLE t1 (c1 INT PRIMARY KEY)ENGINE=INNODB; CREATE TABLE t2 (c2 INT PRIMARY KEY, FOREIGN KEY (c2) REFERENCES t1(c1))ENGINE=INNODB; INSERT INTO t1 VALUES(1); --connect(con1, localhost, root,,test) --connect(con2, localhost, root,,test) --echo # On Connection 1 --connection con1 START TRANSACTION; DELETE FROM t1 WHERE c1 = 1; --echo # On Connection 2 --connection con2 --source include/start_transaction_high_prio.inc INSERT INTO t2 VALUES(1); COMMIT; --echo # On connection 1 --connection con1 --error ER_ERROR_DURING_COMMIT COMMIT; connection default; DROP TABLE t2, t1; # UPDATE CASCADE FOREIGN KEY CONSTRAINT CREATE TABLE t1 (c1 INT PRIMARY KEY)ENGINE=INNODB; CREATE TABLE t2 (c2 INT PRIMARY KEY, FOREIGN KEY (c2) REFERENCES t1(c1) ON UPDATE CASCADE)ENGINE=INNODB; INSERT INTO t1 VALUES(1); --echo # On Connection 1 --connection con1 START TRANSACTION; UPDATE t1 SET C1=2 where C1 = 1; --echo # On Connection 2 --connection con2 --source include/start_transaction_high_prio.inc INSERT INTO t2 VALUES (1); COMMIT; --disconnect con2 --echo --echo # On connection 1 --connection con1 --error ER_ERROR_DURING_COMMIT COMMIT; --disconnect con1 connection default; DROP TABLE t2, t1; --source include/wait_until_count_sessions.inc