Chained

SELECT * FROM gallery2 WHERE topic_id="1590771" UNION SELECT * FROM gallery2 WHERE topic_id="330176" UNION SELECT * FROM gallery2 WHERE topic_id="1561670" UNION SELECT * FROM gallery2 WHERE topic_id="554740" UNION SELECT * FROM gallery2 WHERE topic_id="1056140" UNION SELECT * FROM gallery2 WHERE topic_id="1811980" UNION SELECT * FROM gallery2 WHERE topic_id="1403253" UNION SELECT * FROM gallery2 WHERE topic_id="263730" UNION SELECT * FROM gallery2 WHERE topic_id="269887" UNION SELECT * FROM gallery2 WHERE topic_id="692941" UNION SELECT * FROM gallery2 WHERE topic_id="97956" UNION SELECT * FROM gallery2 WHERE topic_id="156678" UNION SELECT * FROM gallery2 WHERE topic_id="1212831" UNION SELECT * FROM gallery2 WHERE topic_id="79094" UNION SELECT * FROM gallery2 WHERE topic_id="1575381" UNION SELECT * FROM gallery2 WHERE topic_id="1296107"