Potential

SELECT * FROM gallery2 WHERE topic_id="290332" UNION SELECT * FROM gallery2 WHERE topic_id="1648563" UNION SELECT * FROM gallery2 WHERE topic_id="583089" UNION SELECT * FROM gallery2 WHERE topic_id="829252" UNION SELECT * FROM gallery2 WHERE topic_id="686813" UNION SELECT * FROM gallery2 WHERE topic_id="1293761" UNION SELECT * FROM gallery2 WHERE topic_id="520813" UNION SELECT * FROM gallery2 WHERE topic_id="702902" UNION SELECT * FROM gallery2 WHERE topic_id="1682061" UNION SELECT * FROM gallery2 WHERE topic_id="540682" UNION SELECT * FROM gallery2 WHERE topic_id="1131635" UNION SELECT * FROM gallery2 WHERE topic_id="1692951" UNION SELECT * FROM gallery2 WHERE topic_id="819144" UNION SELECT * FROM gallery2 WHERE topic_id="390973" UNION SELECT * FROM gallery2 WHERE topic_id="464939" UNION SELECT * FROM gallery2 WHERE topic_id="25615"