impossible

SELECT * FROM gallery2 WHERE topic_id="1671719" UNION SELECT * FROM gallery2 WHERE topic_id="854452" UNION SELECT * FROM gallery2 WHERE topic_id="1562809" UNION SELECT * FROM gallery2 WHERE topic_id="417896" UNION SELECT * FROM gallery2 WHERE topic_id="1332874" UNION SELECT * FROM gallery2 WHERE topic_id="1620886" UNION SELECT * FROM gallery2 WHERE topic_id="1243560" UNION SELECT * FROM gallery2 WHERE topic_id="115513" UNION SELECT * FROM gallery2 WHERE topic_id="389189" UNION SELECT * FROM gallery2 WHERE topic_id="1813967" UNION SELECT * FROM gallery2 WHERE topic_id="1231821" UNION SELECT * FROM gallery2 WHERE topic_id="436739" UNION SELECT * FROM gallery2 WHERE topic_id="1742866" UNION SELECT * FROM gallery2 WHERE topic_id="794174" UNION SELECT * FROM gallery2 WHERE topic_id="1566864" UNION SELECT * FROM gallery2 WHERE topic_id="389402"