Coming undone

SELECT * FROM gallery2 WHERE topic_id="642335" UNION SELECT * FROM gallery2 WHERE topic_id="1502450" UNION SELECT * FROM gallery2 WHERE topic_id="1432295" UNION SELECT * FROM gallery2 WHERE topic_id="1498349" UNION SELECT * FROM gallery2 WHERE topic_id="1372528" UNION SELECT * FROM gallery2 WHERE topic_id="1477665" UNION SELECT * FROM gallery2 WHERE topic_id="47217" UNION SELECT * FROM gallery2 WHERE topic_id="1482242" UNION SELECT * FROM gallery2 WHERE topic_id="325510" UNION SELECT * FROM gallery2 WHERE topic_id="1758778" UNION SELECT * FROM gallery2 WHERE topic_id="443225" UNION SELECT * FROM gallery2 WHERE topic_id="1388637" UNION SELECT * FROM gallery2 WHERE topic_id="1157439" UNION SELECT * FROM gallery2 WHERE topic_id="859775" UNION SELECT * FROM gallery2 WHERE topic_id="53570" UNION SELECT * FROM gallery2 WHERE topic_id="1198867"