Perfect

SELECT * FROM gallery2 WHERE topic_id="916358" UNION SELECT * FROM gallery2 WHERE topic_id="119819" UNION SELECT * FROM gallery2 WHERE topic_id="279167" UNION SELECT * FROM gallery2 WHERE topic_id="1820732" UNION SELECT * FROM gallery2 WHERE topic_id="150992" UNION SELECT * FROM gallery2 WHERE topic_id="1510647" UNION SELECT * FROM gallery2 WHERE topic_id="1630635" UNION SELECT * FROM gallery2 WHERE topic_id="1334601" UNION SELECT * FROM gallery2 WHERE topic_id="1241838" UNION SELECT * FROM gallery2 WHERE topic_id="237037" UNION SELECT * FROM gallery2 WHERE topic_id="1616477" UNION SELECT * FROM gallery2 WHERE topic_id="658135" UNION SELECT * FROM gallery2 WHERE topic_id="1279068" UNION SELECT * FROM gallery2 WHERE topic_id="149676" UNION SELECT * FROM gallery2 WHERE topic_id="261004" UNION SELECT * FROM gallery2 WHERE topic_id="84874"