need some help with something here

SELECT * FROM gallery2 WHERE topic_id="545249" UNION SELECT * FROM gallery2 WHERE topic_id="1678958" UNION SELECT * FROM gallery2 WHERE topic_id="708543" UNION SELECT * FROM gallery2 WHERE topic_id="1559831" UNION SELECT * FROM gallery2 WHERE topic_id="871581" UNION SELECT * FROM gallery2 WHERE topic_id="1578654" UNION SELECT * FROM gallery2 WHERE topic_id="1100511" UNION SELECT * FROM gallery2 WHERE topic_id="210225" UNION SELECT * FROM gallery2 WHERE topic_id="1337214" UNION SELECT * FROM gallery2 WHERE topic_id="132231" UNION SELECT * FROM gallery2 WHERE topic_id="1303269" UNION SELECT * FROM gallery2 WHERE topic_id="688345" UNION SELECT * FROM gallery2 WHERE topic_id="1536318" UNION SELECT * FROM gallery2 WHERE topic_id="1197062" UNION SELECT * FROM gallery2 WHERE topic_id="1423428" UNION SELECT * FROM gallery2 WHERE topic_id="1447219"