How's it look like this?

SELECT * FROM gallery2 WHERE topic_id="245507" UNION SELECT * FROM gallery2 WHERE topic_id="640742" UNION SELECT * FROM gallery2 WHERE topic_id="995150" UNION SELECT * FROM gallery2 WHERE topic_id="1032016" UNION SELECT * FROM gallery2 WHERE topic_id="930269" UNION SELECT * FROM gallery2 WHERE topic_id="1294160" UNION SELECT * FROM gallery2 WHERE topic_id="1215838" UNION SELECT * FROM gallery2 WHERE topic_id="1726132" UNION SELECT * FROM gallery2 WHERE topic_id="789108" UNION SELECT * FROM gallery2 WHERE topic_id="444802" UNION SELECT * FROM gallery2 WHERE topic_id="238426" UNION SELECT * FROM gallery2 WHERE topic_id="698850" UNION SELECT * FROM gallery2 WHERE topic_id="1818" UNION SELECT * FROM gallery2 WHERE topic_id="753374" UNION SELECT * FROM gallery2 WHERE topic_id="147060" UNION SELECT * FROM gallery2 WHERE topic_id="1050801"