Super tight

SELECT * FROM gallery2 WHERE topic_id="1543155" UNION SELECT * FROM gallery2 WHERE topic_id="1516745" UNION SELECT * FROM gallery2 WHERE topic_id="1587480" UNION SELECT * FROM gallery2 WHERE topic_id="1769082" UNION SELECT * FROM gallery2 WHERE topic_id="1578094" UNION SELECT * FROM gallery2 WHERE topic_id="339585" UNION SELECT * FROM gallery2 WHERE topic_id="268382" UNION SELECT * FROM gallery2 WHERE topic_id="650140" UNION SELECT * FROM gallery2 WHERE topic_id="546791" UNION SELECT * FROM gallery2 WHERE topic_id="503748" UNION SELECT * FROM gallery2 WHERE topic_id="1392771" UNION SELECT * FROM gallery2 WHERE topic_id="1090795" UNION SELECT * FROM gallery2 WHERE topic_id="535491" UNION SELECT * FROM gallery2 WHERE topic_id="781194" UNION SELECT * FROM gallery2 WHERE topic_id="1159342" UNION SELECT * FROM gallery2 WHERE topic_id="1538030"