Handler or handled

SELECT * FROM gallery2 WHERE topic_id="1306717" UNION SELECT * FROM gallery2 WHERE topic_id="1207817" UNION SELECT * FROM gallery2 WHERE topic_id="262719" UNION SELECT * FROM gallery2 WHERE topic_id="283550" UNION SELECT * FROM gallery2 WHERE topic_id="419426" UNION SELECT * FROM gallery2 WHERE topic_id="1594391" UNION SELECT * FROM gallery2 WHERE topic_id="58343" UNION SELECT * FROM gallery2 WHERE topic_id="927232" UNION SELECT * FROM gallery2 WHERE topic_id="791987" UNION SELECT * FROM gallery2 WHERE topic_id="51572" UNION SELECT * FROM gallery2 WHERE topic_id="1688127" UNION SELECT * FROM gallery2 WHERE topic_id="1637685" UNION SELECT * FROM gallery2 WHERE topic_id="66698" UNION SELECT * FROM gallery2 WHERE topic_id="1353241" UNION SELECT * FROM gallery2 WHERE topic_id="1418253" UNION SELECT * FROM gallery2 WHERE topic_id="957898"