Thinking

SELECT * FROM gallery2 WHERE topic_id="945726" UNION SELECT * FROM gallery2 WHERE topic_id="1746289" UNION SELECT * FROM gallery2 WHERE topic_id="1725019" UNION SELECT * FROM gallery2 WHERE topic_id="1554691" UNION SELECT * FROM gallery2 WHERE topic_id="1747482" UNION SELECT * FROM gallery2 WHERE topic_id="361041" UNION SELECT * FROM gallery2 WHERE topic_id="698408" UNION SELECT * FROM gallery2 WHERE topic_id="625410" UNION SELECT * FROM gallery2 WHERE topic_id="454568" UNION SELECT * FROM gallery2 WHERE topic_id="587268" UNION SELECT * FROM gallery2 WHERE topic_id="111362" UNION SELECT * FROM gallery2 WHERE topic_id="1357130" UNION SELECT * FROM gallery2 WHERE topic_id="1038357" UNION SELECT * FROM gallery2 WHERE topic_id="1613550" UNION SELECT * FROM gallery2 WHERE topic_id="1601417" UNION SELECT * FROM gallery2 WHERE topic_id="573048"