Slice

SELECT * FROM gallery2 WHERE topic_id="321235" UNION SELECT * FROM gallery2 WHERE topic_id="184952" UNION SELECT * FROM gallery2 WHERE topic_id="1719918" UNION SELECT * FROM gallery2 WHERE topic_id="83136" UNION SELECT * FROM gallery2 WHERE topic_id="1565304" UNION SELECT * FROM gallery2 WHERE topic_id="1091376" UNION SELECT * FROM gallery2 WHERE topic_id="1632992" UNION SELECT * FROM gallery2 WHERE topic_id="1086553" UNION SELECT * FROM gallery2 WHERE topic_id="1732703" UNION SELECT * FROM gallery2 WHERE topic_id="1253103" UNION SELECT * FROM gallery2 WHERE topic_id="1041637" UNION SELECT * FROM gallery2 WHERE topic_id="340124" UNION SELECT * FROM gallery2 WHERE topic_id="1085582" UNION SELECT * FROM gallery2 WHERE topic_id="1111964" UNION SELECT * FROM gallery2 WHERE topic_id="1024820" UNION SELECT * FROM gallery2 WHERE topic_id="77562"