Trial

SELECT * FROM gallery2 WHERE topic_id="1298009" UNION SELECT * FROM gallery2 WHERE topic_id="1748395" UNION SELECT * FROM gallery2 WHERE topic_id="198459" UNION SELECT * FROM gallery2 WHERE topic_id="1083288" UNION SELECT * FROM gallery2 WHERE topic_id="1395859" UNION SELECT * FROM gallery2 WHERE topic_id="1644189" UNION SELECT * FROM gallery2 WHERE topic_id="409960" UNION SELECT * FROM gallery2 WHERE topic_id="907650" UNION SELECT * FROM gallery2 WHERE topic_id="636703" UNION SELECT * FROM gallery2 WHERE topic_id="593535" UNION SELECT * FROM gallery2 WHERE topic_id="1668837" UNION SELECT * FROM gallery2 WHERE topic_id="1663273" UNION SELECT * FROM gallery2 WHERE topic_id="1239805" UNION SELECT * FROM gallery2 WHERE topic_id="540466" UNION SELECT * FROM gallery2 WHERE topic_id="756735" UNION SELECT * FROM gallery2 WHERE topic_id="1525217"