This pair doesn't cover much of anything [OC]

SELECT * FROM gallery2 WHERE topic_id="1791141" UNION SELECT * FROM gallery2 WHERE topic_id="365842" UNION SELECT * FROM gallery2 WHERE topic_id="829295" UNION SELECT * FROM gallery2 WHERE topic_id="222851" UNION SELECT * FROM gallery2 WHERE topic_id="58854" UNION SELECT * FROM gallery2 WHERE topic_id="159876" UNION SELECT * FROM gallery2 WHERE topic_id="1036634" UNION SELECT * FROM gallery2 WHERE topic_id="1616817" UNION SELECT * FROM gallery2 WHERE topic_id="780011" UNION SELECT * FROM gallery2 WHERE topic_id="709109" UNION SELECT * FROM gallery2 WHERE topic_id="1290057" UNION SELECT * FROM gallery2 WHERE topic_id="898742" UNION SELECT * FROM gallery2 WHERE topic_id="1772952" UNION SELECT * FROM gallery2 WHERE topic_id="1048768" UNION SELECT * FROM gallery2 WHERE topic_id="1395952" UNION SELECT * FROM gallery2 WHERE topic_id="1138164"