Thoughts

SELECT * FROM gallery2 WHERE topic_id="742227" UNION SELECT * FROM gallery2 WHERE topic_id="55" UNION SELECT * FROM gallery2 WHERE topic_id="511059" UNION SELECT * FROM gallery2 WHERE topic_id="1494102" UNION SELECT * FROM gallery2 WHERE topic_id="553689" UNION SELECT * FROM gallery2 WHERE topic_id="782868" UNION SELECT * FROM gallery2 WHERE topic_id="1040537" UNION SELECT * FROM gallery2 WHERE topic_id="806146" UNION SELECT * FROM gallery2 WHERE topic_id="378398" UNION SELECT * FROM gallery2 WHERE topic_id="635269" UNION SELECT * FROM gallery2 WHERE topic_id="103289" UNION SELECT * FROM gallery2 WHERE topic_id="1328662" UNION SELECT * FROM gallery2 WHERE topic_id="1594114" UNION SELECT * FROM gallery2 WHERE topic_id="1212028" UNION SELECT * FROM gallery2 WHERE topic_id="68445" UNION SELECT * FROM gallery2 WHERE topic_id="1529683"