The tiniest string…

SELECT * FROM gallery2 WHERE topic_id="1246331" UNION SELECT * FROM gallery2 WHERE topic_id="1262900" UNION SELECT * FROM gallery2 WHERE topic_id="638933" UNION SELECT * FROM gallery2 WHERE topic_id="436784" UNION SELECT * FROM gallery2 WHERE topic_id="1041818" UNION SELECT * FROM gallery2 WHERE topic_id="1737582" UNION SELECT * FROM gallery2 WHERE topic_id="187439" UNION SELECT * FROM gallery2 WHERE topic_id="15342" UNION SELECT * FROM gallery2 WHERE topic_id="1397100" UNION SELECT * FROM gallery2 WHERE topic_id="1066203" UNION SELECT * FROM gallery2 WHERE topic_id="1601612" UNION SELECT * FROM gallery2 WHERE topic_id="333182" UNION SELECT * FROM gallery2 WHERE topic_id="350935" UNION SELECT * FROM gallery2 WHERE topic_id="1817825" UNION SELECT * FROM gallery2 WHERE topic_id="26633" UNION SELECT * FROM gallery2 WHERE topic_id="1352164"