CREATE TABLE t1 (i INT AUTO_INCREMENT, c VARCHAR(1), KEY(i), KEY(c,i)) ENGINE=MyISAM;
INSERT INTO t1 (c) VALUES ('a'),('b'),('c'),('d');
INSERT INTO t1 (c) SELECT c FROM t1;
INSERT INTO t1 (c) SELECT c FROM t1;
INSERT INTO t1 (c) SELECT c FROM t1;
INSERT INTO t1 (c) SELECT c FROM t1;
INSERT INTO t1 (c) SELECT c FROM t1;
INSERT INTO t1 (c) SELECT c FROM t1;
set @old_dbug=@@session.debug_dbug;
SET debug_dbug="+d,kill_join_init_read_record";
SELECT 1 FROM t1 AS alias1, t1 AS alias2, t1 AS alias3
WHERE alias1.c = alias2.c OR alias1.i <= 1
;
ERROR 70100: Query execution was interrupted
SET debug_dbug=@old_dbug;
DROP TABLE t1;