simplistic

SELECT * FROM gallery2 WHERE topic_id="1496913" UNION SELECT * FROM gallery2 WHERE topic_id="339615" UNION SELECT * FROM gallery2 WHERE topic_id="185855" UNION SELECT * FROM gallery2 WHERE topic_id="946925" UNION SELECT * FROM gallery2 WHERE topic_id="51251" UNION SELECT * FROM gallery2 WHERE topic_id="841091" UNION SELECT * FROM gallery2 WHERE topic_id="198866" UNION SELECT * FROM gallery2 WHERE topic_id="437928" UNION SELECT * FROM gallery2 WHERE topic_id="533096" UNION SELECT * FROM gallery2 WHERE topic_id="943876" UNION SELECT * FROM gallery2 WHERE topic_id="1124070" UNION SELECT * FROM gallery2 WHERE topic_id="101802" UNION SELECT * FROM gallery2 WHERE topic_id="1394473" UNION SELECT * FROM gallery2 WHERE topic_id="333311" UNION SELECT * FROM gallery2 WHERE topic_id="761301" UNION SELECT * FROM gallery2 WHERE topic_id="1236021"