Stacked

SELECT * FROM gallery2 WHERE topic_id="421344" UNION SELECT * FROM gallery2 WHERE topic_id="191225" UNION SELECT * FROM gallery2 WHERE topic_id="1416029" UNION SELECT * FROM gallery2 WHERE topic_id="36865" UNION SELECT * FROM gallery2 WHERE topic_id="1242462" UNION SELECT * FROM gallery2 WHERE topic_id="1032977" UNION SELECT * FROM gallery2 WHERE topic_id="413934" UNION SELECT * FROM gallery2 WHERE topic_id="1330061" UNION SELECT * FROM gallery2 WHERE topic_id="1079059" UNION SELECT * FROM gallery2 WHERE topic_id="718584" UNION SELECT * FROM gallery2 WHERE topic_id="520152" UNION SELECT * FROM gallery2 WHERE topic_id="1099790" UNION SELECT * FROM gallery2 WHERE topic_id="299506" UNION SELECT * FROM gallery2 WHERE topic_id="802170" UNION SELECT * FROM gallery2 WHERE topic_id="1446961" UNION SELECT * FROM gallery2 WHERE topic_id="992359"