Overflowing

SELECT * FROM gallery2 WHERE topic_id="556500" UNION SELECT * FROM gallery2 WHERE topic_id="28299" UNION SELECT * FROM gallery2 WHERE topic_id="184747" UNION SELECT * FROM gallery2 WHERE topic_id="1584625" UNION SELECT * FROM gallery2 WHERE topic_id="1558720" UNION SELECT * FROM gallery2 WHERE topic_id="1317388" UNION SELECT * FROM gallery2 WHERE topic_id="1299477" UNION SELECT * FROM gallery2 WHERE topic_id="1375221" UNION SELECT * FROM gallery2 WHERE topic_id="1636012" UNION SELECT * FROM gallery2 WHERE topic_id="706238" UNION SELECT * FROM gallery2 WHERE topic_id="1596521" UNION SELECT * FROM gallery2 WHERE topic_id="1231171" UNION SELECT * FROM gallery2 WHERE topic_id="93443" UNION SELECT * FROM gallery2 WHERE topic_id="855400" UNION SELECT * FROM gallery2 WHERE topic_id="762417" UNION SELECT * FROM gallery2 WHERE topic_id="843441"