SELECT ( SELECT b FROM t2 WHERE b = a OR rand() * 0) FROM t1; ( SELECT b FROM t2 WHERE b = a OR rand() * 0) 1 1
Also wrong.
SELECT ( SELECT b FROM t2 WHERE b = a OR rand() * 0) FROM t1;
( SELECT b FROM t2 WHERE b = a OR rand() * 0)
1
1
Also wrong.