Potential

SELECT * FROM gallery2 WHERE topic_id="773641" UNION SELECT * FROM gallery2 WHERE topic_id="1237404" UNION SELECT * FROM gallery2 WHERE topic_id="394214" UNION SELECT * FROM gallery2 WHERE topic_id="760170" UNION SELECT * FROM gallery2 WHERE topic_id="1153956" UNION SELECT * FROM gallery2 WHERE topic_id="1191490" UNION SELECT * FROM gallery2 WHERE topic_id="1257695" UNION SELECT * FROM gallery2 WHERE topic_id="1789762" UNION SELECT * FROM gallery2 WHERE topic_id="1089311" UNION SELECT * FROM gallery2 WHERE topic_id="953111" UNION SELECT * FROM gallery2 WHERE topic_id="1777865" UNION SELECT * FROM gallery2 WHERE topic_id="419133" UNION SELECT * FROM gallery2 WHERE topic_id="1618319" UNION SELECT * FROM gallery2 WHERE topic_id="758018" UNION SELECT * FROM gallery2 WHERE topic_id="1285484" UNION SELECT * FROM gallery2 WHERE topic_id="239444"