Heavy leakage

SELECT * FROM gallery2 WHERE topic_id="835584" UNION SELECT * FROM gallery2 WHERE topic_id="1552314" UNION SELECT * FROM gallery2 WHERE topic_id="930863" UNION SELECT * FROM gallery2 WHERE topic_id="1447594" UNION SELECT * FROM gallery2 WHERE topic_id="444235" UNION SELECT * FROM gallery2 WHERE topic_id="1802613" UNION SELECT * FROM gallery2 WHERE topic_id="780556" UNION SELECT * FROM gallery2 WHERE topic_id="948027" UNION SELECT * FROM gallery2 WHERE topic_id="516127" UNION SELECT * FROM gallery2 WHERE topic_id="1126351" UNION SELECT * FROM gallery2 WHERE topic_id="1423563" UNION SELECT * FROM gallery2 WHERE topic_id="447974" UNION SELECT * FROM gallery2 WHERE topic_id="1607521" UNION SELECT * FROM gallery2 WHERE topic_id="1407148" UNION SELECT * FROM gallery2 WHERE topic_id="225196" UNION SELECT * FROM gallery2 WHERE topic_id="19815"