Pretty neat

SELECT * FROM gallery2 WHERE topic_id="1502788" UNION SELECT * FROM gallery2 WHERE topic_id="444726" UNION SELECT * FROM gallery2 WHERE topic_id="8219" UNION SELECT * FROM gallery2 WHERE topic_id="1128110" UNION SELECT * FROM gallery2 WHERE topic_id="1290626" UNION SELECT * FROM gallery2 WHERE topic_id="41056" UNION SELECT * FROM gallery2 WHERE topic_id="724052" UNION SELECT * FROM gallery2 WHERE topic_id="1655857" UNION SELECT * FROM gallery2 WHERE topic_id="792738" UNION SELECT * FROM gallery2 WHERE topic_id="1239897" UNION SELECT * FROM gallery2 WHERE topic_id="867615" UNION SELECT * FROM gallery2 WHERE topic_id="1653449" UNION SELECT * FROM gallery2 WHERE topic_id="1747443" UNION SELECT * FROM gallery2 WHERE topic_id="168096" UNION SELECT * FROM gallery2 WHERE topic_id="1292271" UNION SELECT * FROM gallery2 WHERE topic_id="1099792"