Stacked

SELECT * FROM gallery2 WHERE topic_id="1577976" UNION SELECT * FROM gallery2 WHERE topic_id="1591972" UNION SELECT * FROM gallery2 WHERE topic_id="244564" UNION SELECT * FROM gallery2 WHERE topic_id="1566089" UNION SELECT * FROM gallery2 WHERE topic_id="1278894" UNION SELECT * FROM gallery2 WHERE topic_id="46870" UNION SELECT * FROM gallery2 WHERE topic_id="1139884" UNION SELECT * FROM gallery2 WHERE topic_id="708481" UNION SELECT * FROM gallery2 WHERE topic_id="1815423" UNION SELECT * FROM gallery2 WHERE topic_id="95934" UNION SELECT * FROM gallery2 WHERE topic_id="1287924" UNION SELECT * FROM gallery2 WHERE topic_id="1414599" UNION SELECT * FROM gallery2 WHERE topic_id="370423" UNION SELECT * FROM gallery2 WHERE topic_id="973501" UNION SELECT * FROM gallery2 WHERE topic_id="1580549" UNION SELECT * FROM gallery2 WHERE topic_id="1535955"