What do you think?

SELECT * FROM gallery2 WHERE topic_id="1662653" UNION SELECT * FROM gallery2 WHERE topic_id="1740463" UNION SELECT * FROM gallery2 WHERE topic_id="767642" UNION SELECT * FROM gallery2 WHERE topic_id="911283" UNION SELECT * FROM gallery2 WHERE topic_id="925511" UNION SELECT * FROM gallery2 WHERE topic_id="980235" UNION SELECT * FROM gallery2 WHERE topic_id="1097839" UNION SELECT * FROM gallery2 WHERE topic_id="872518" UNION SELECT * FROM gallery2 WHERE topic_id="773048" UNION SELECT * FROM gallery2 WHERE topic_id="473964" UNION SELECT * FROM gallery2 WHERE topic_id="199475" UNION SELECT * FROM gallery2 WHERE topic_id="1565080" UNION SELECT * FROM gallery2 WHERE topic_id="226962" UNION SELECT * FROM gallery2 WHERE topic_id="786267" UNION SELECT * FROM gallery2 WHERE topic_id="1797537" UNION SELECT * FROM gallery2 WHERE topic_id="938692"