Similar to 724942 , the following query returns a value found in the WHERE clause and not in the underlying table. the derived_merge switch has no effect.

test case:

CREATE TABLE t1 ( f1 int NOT NULL , f3 int, f6 int, f10 varchar(32), f11 int) ;
INSERT INTO t1 VALUES (20,5,2,'r', 0);
CREATE VIEW v1 AS SELECT * FROM t1;
SELECT v1.f10 FROM v1 WHERE f1 OR f3 AND f10 = 'v' AND ( f3 OR f6 AND f11 OR f10 LIKE '%b%' );

EXPLAIN:

id select_type table type possible_keys key key_len ref rows filtered Extra
1 SIMPLE t1 system NULL NULL NULL NULL 1 100.00

EXPLAIN EXTENDED:

select 'v' AS `f10` from `test`.`t1` where (20 or 0)

bzr version-info:

revision-id: <email address hidden>
date: 2011-06-15 21:48:38 -0700
build-date: 2011-06-17 13:38:12 +0300
revno: 3049
branch-nick: maria-5.3