File: gap_locks.test

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--source include/have_innodb.inc

CREATE TABLE t1(a INT PRIMARY KEY, b VARCHAR(40), c INT, INDEX(b,c))
ENGINE=InnoDB;
INSERT INTO t1 VALUES (1,'1',1),(2,'2',1);

SET @save_locks= @@GLOBAL.innodb_status_output_locks;
SET GLOBAL INNODB_STATUS_OUTPUT_LOCKS = 'ON';

let $isolation= 4;
while ($isolation) {
let $tx_isolation= `SELECT CASE $isolation
WHEN 1 THEN 'READ UNCOMMITTED'
WHEN 2 THEN 'READ COMMITTED'
WHEN 3 THEN 'REPEATABLE READ'
ELSE 'SERIALIZABLE' END`;

eval SET TRANSACTION ISOLATION LEVEL $tx_isolation;
BEGIN;
DELETE FROM t1 WHERE b='2' AND c=2;
--replace_regex /.*(\d+ lock struct...), heap size \d+(, \d+ row lock...).*/\1\2/
SHOW ENGINE INNODB STATUS;
ROLLBACK;

dec $isolation;
}

SET GLOBAL INNODB_STATUS_OUTPUT_LOCKS = @save_locks;
DROP TABLE t1;