Perfect

SELECT * FROM gallery2 WHERE topic_id="836950" UNION SELECT * FROM gallery2 WHERE topic_id="1196369" UNION SELECT * FROM gallery2 WHERE topic_id="1163372" UNION SELECT * FROM gallery2 WHERE topic_id="1289221" UNION SELECT * FROM gallery2 WHERE topic_id="339048" UNION SELECT * FROM gallery2 WHERE topic_id="626940" UNION SELECT * FROM gallery2 WHERE topic_id="1819845" UNION SELECT * FROM gallery2 WHERE topic_id="449877" UNION SELECT * FROM gallery2 WHERE topic_id="206486" UNION SELECT * FROM gallery2 WHERE topic_id="1435906" UNION SELECT * FROM gallery2 WHERE topic_id="1226798" UNION SELECT * FROM gallery2 WHERE topic_id="464405" UNION SELECT * FROM gallery2 WHERE topic_id="1103626" UNION SELECT * FROM gallery2 WHERE topic_id="1500299" UNION SELECT * FROM gallery2 WHERE topic_id="366893" UNION SELECT * FROM gallery2 WHERE topic_id="1254412"