Yor

SELECT * FROM gallery2 WHERE topic_id="708768" UNION SELECT * FROM gallery2 WHERE topic_id="840495" UNION SELECT * FROM gallery2 WHERE topic_id="753642" UNION SELECT * FROM gallery2 WHERE topic_id="309646" UNION SELECT * FROM gallery2 WHERE topic_id="1137184" UNION SELECT * FROM gallery2 WHERE topic_id="827060" UNION SELECT * FROM gallery2 WHERE topic_id="1649664" UNION SELECT * FROM gallery2 WHERE topic_id="1329611" UNION SELECT * FROM gallery2 WHERE topic_id="1278117" UNION SELECT * FROM gallery2 WHERE topic_id="1612964" UNION SELECT * FROM gallery2 WHERE topic_id="1448738" UNION SELECT * FROM gallery2 WHERE topic_id="1564727" UNION SELECT * FROM gallery2 WHERE topic_id="1281614" UNION SELECT * FROM gallery2 WHERE topic_id="1101267" UNION SELECT * FROM gallery2 WHERE topic_id="501043" UNION SELECT * FROM gallery2 WHERE topic_id="1688909"