--echo #
--echo # MDEV-7149 Constant condition propagation erroneously applied for LIKE
--echo #

CREATE TABLE t1 AS SELECT REPEAT('a',10) AS c1 LIMIT 0;
SHOW CREATE TABLE t1;
INSERT INTO t1 VALUES ('ae'),('ä');
SELECT * FROM t1 WHERE c1='ä';
SELECT * FROM t1 WHERE c1 LIKE 'ae';
SELECT * FROM t1 WHERE c1='ä' AND c1 LIKE 'ae';
EXPLAIN EXTENDED SELECT * FROM t1 WHERE c1='ä' AND c1 LIKE 'ae';
SELECT * FROM t1 WHERE CONCAT(c1)='ä';
SELECT * FROM t1 WHERE CONCAT(c1) LIKE 'ae';
SELECT * FROM t1 WHERE CONCAT(c1)='ä' AND CONCAT(c1) LIKE 'ae';
EXPLAIN EXTENDED SELECT * FROM t1 WHERE CONCAT(c1)='ä' AND CONCAT(c1) LIKE 'ae';
DROP TABLE IF EXISTS t1;