In trouble

SELECT * FROM gallery2 WHERE topic_id="723324" UNION SELECT * FROM gallery2 WHERE topic_id="336572" UNION SELECT * FROM gallery2 WHERE topic_id="1206565" UNION SELECT * FROM gallery2 WHERE topic_id="1414255" UNION SELECT * FROM gallery2 WHERE topic_id="1756725" UNION SELECT * FROM gallery2 WHERE topic_id="1613031" UNION SELECT * FROM gallery2 WHERE topic_id="736349" UNION SELECT * FROM gallery2 WHERE topic_id="1583849" UNION SELECT * FROM gallery2 WHERE topic_id="19236" UNION SELECT * FROM gallery2 WHERE topic_id="145437" UNION SELECT * FROM gallery2 WHERE topic_id="1488354" UNION SELECT * FROM gallery2 WHERE topic_id="487663" UNION SELECT * FROM gallery2 WHERE topic_id="1296262" UNION SELECT * FROM gallery2 WHERE topic_id="1011354" UNION SELECT * FROM gallery2 WHERE topic_id="2646" UNION SELECT * FROM gallery2 WHERE topic_id="1547624"