Hey there :)

SELECT * FROM gallery2 WHERE topic_id="1529794" UNION SELECT * FROM gallery2 WHERE topic_id="434664" UNION SELECT * FROM gallery2 WHERE topic_id="1355797" UNION SELECT * FROM gallery2 WHERE topic_id="1358323" UNION SELECT * FROM gallery2 WHERE topic_id="1309062" UNION SELECT * FROM gallery2 WHERE topic_id="135251" UNION SELECT * FROM gallery2 WHERE topic_id="1381516" UNION SELECT * FROM gallery2 WHERE topic_id="1806417" UNION SELECT * FROM gallery2 WHERE topic_id="1318037" UNION SELECT * FROM gallery2 WHERE topic_id="656226" UNION SELECT * FROM gallery2 WHERE topic_id="1389133" UNION SELECT * FROM gallery2 WHERE topic_id="499386" UNION SELECT * FROM gallery2 WHERE topic_id="1300627" UNION SELECT * FROM gallery2 WHERE topic_id="960579" UNION SELECT * FROM gallery2 WHERE topic_id="89709" UNION SELECT * FROM gallery2 WHERE topic_id="1135834"