Need this

SELECT * FROM gallery2 WHERE topic_id="1804479" UNION SELECT * FROM gallery2 WHERE topic_id="64622" UNION SELECT * FROM gallery2 WHERE topic_id="1533461" UNION SELECT * FROM gallery2 WHERE topic_id="1068569" UNION SELECT * FROM gallery2 WHERE topic_id="627142" UNION SELECT * FROM gallery2 WHERE topic_id="631121" UNION SELECT * FROM gallery2 WHERE topic_id="1156527" UNION SELECT * FROM gallery2 WHERE topic_id="326163" UNION SELECT * FROM gallery2 WHERE topic_id="404192" UNION SELECT * FROM gallery2 WHERE topic_id="528109" UNION SELECT * FROM gallery2 WHERE topic_id="899969" UNION SELECT * FROM gallery2 WHERE topic_id="224834" UNION SELECT * FROM gallery2 WHERE topic_id="1432455" UNION SELECT * FROM gallery2 WHERE topic_id="432119" UNION SELECT * FROM gallery2 WHERE topic_id="868881" UNION SELECT * FROM gallery2 WHERE topic_id="551387"