Perfect

SELECT * FROM gallery2 WHERE topic_id="246971" UNION SELECT * FROM gallery2 WHERE topic_id="1717000" UNION SELECT * FROM gallery2 WHERE topic_id="36120" UNION SELECT * FROM gallery2 WHERE topic_id="1096728" UNION SELECT * FROM gallery2 WHERE topic_id="59239" UNION SELECT * FROM gallery2 WHERE topic_id="1615210" UNION SELECT * FROM gallery2 WHERE topic_id="1444386" UNION SELECT * FROM gallery2 WHERE topic_id="341263" UNION SELECT * FROM gallery2 WHERE topic_id="1578602" UNION SELECT * FROM gallery2 WHERE topic_id="1619686" UNION SELECT * FROM gallery2 WHERE topic_id="79599" UNION SELECT * FROM gallery2 WHERE topic_id="1010129" UNION SELECT * FROM gallery2 WHERE topic_id="1606820" UNION SELECT * FROM gallery2 WHERE topic_id="777116" UNION SELECT * FROM gallery2 WHERE topic_id="267999" UNION SELECT * FROM gallery2 WHERE topic_id="853993"