Short stack

SELECT * FROM gallery2 WHERE topic_id="1646190" UNION SELECT * FROM gallery2 WHERE topic_id="1692239" UNION SELECT * FROM gallery2 WHERE topic_id="1261773" UNION SELECT * FROM gallery2 WHERE topic_id="1724975" UNION SELECT * FROM gallery2 WHERE topic_id="1536128" UNION SELECT * FROM gallery2 WHERE topic_id="1138876" UNION SELECT * FROM gallery2 WHERE topic_id="12244" UNION SELECT * FROM gallery2 WHERE topic_id="931849" UNION SELECT * FROM gallery2 WHERE topic_id="724650" UNION SELECT * FROM gallery2 WHERE topic_id="573818" UNION SELECT * FROM gallery2 WHERE topic_id="97297" UNION SELECT * FROM gallery2 WHERE topic_id="979114" UNION SELECT * FROM gallery2 WHERE topic_id="1041230" UNION SELECT * FROM gallery2 WHERE topic_id="1645456" UNION SELECT * FROM gallery2 WHERE topic_id="180082" UNION SELECT * FROM gallery2 WHERE topic_id="1653166"