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# # Bug #53742: UPDATEs have no effect after applying patch for bug 36569 # CREATE TABLE t1 ( pk INT NOT NULL AUTO_INCREMENT, c1_idx CHAR(1) DEFAULT 'y', c2 INT, PRIMARY KEY (pk), INDEX c1_idx (c1_idx) ) ENGINE=InnoDB; INSERT INTO t1 VALUES (), (), (), (); SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; pk c1_idx c2 4 y NULL 3 y NULL UPDATE t1 SET c2 = 0 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; pk c1_idx c2 4 y 0 3 y 0 SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC; pk c1_idx c2 4 y 0 3 y 0 2 y NULL 1 y NULL DELETE FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC LIMIT 2; SELECT * FROM t1 WHERE c1_idx = 'y' ORDER BY pk DESC; pk c1_idx c2 2 y NULL 1 y NULL DROP TABLE t1;