Potential

SELECT * FROM gallery2 WHERE topic_id="901619" UNION SELECT * FROM gallery2 WHERE topic_id="1430291" UNION SELECT * FROM gallery2 WHERE topic_id="1499096" UNION SELECT * FROM gallery2 WHERE topic_id="40585" UNION SELECT * FROM gallery2 WHERE topic_id="89026" UNION SELECT * FROM gallery2 WHERE topic_id="475424" UNION SELECT * FROM gallery2 WHERE topic_id="1358849" UNION SELECT * FROM gallery2 WHERE topic_id="424745" UNION SELECT * FROM gallery2 WHERE topic_id="1467726" UNION SELECT * FROM gallery2 WHERE topic_id="1721192" UNION SELECT * FROM gallery2 WHERE topic_id="769640" UNION SELECT * FROM gallery2 WHERE topic_id="1554512" UNION SELECT * FROM gallery2 WHERE topic_id="623397" UNION SELECT * FROM gallery2 WHERE topic_id="408270" UNION SELECT * FROM gallery2 WHERE topic_id="1541112" UNION SELECT * FROM gallery2 WHERE topic_id="743242"