What’s the code?

SELECT * FROM gallery2 WHERE topic_id="1576501" UNION SELECT * FROM gallery2 WHERE topic_id="51850" UNION SELECT * FROM gallery2 WHERE topic_id="769183" UNION SELECT * FROM gallery2 WHERE topic_id="1488549" UNION SELECT * FROM gallery2 WHERE topic_id="39846" UNION SELECT * FROM gallery2 WHERE topic_id="348444" UNION SELECT * FROM gallery2 WHERE topic_id="1502878" UNION SELECT * FROM gallery2 WHERE topic_id="266165" UNION SELECT * FROM gallery2 WHERE topic_id="8810" UNION SELECT * FROM gallery2 WHERE topic_id="991066" UNION SELECT * FROM gallery2 WHERE topic_id="610467" UNION SELECT * FROM gallery2 WHERE topic_id="1569489" UNION SELECT * FROM gallery2 WHERE topic_id="1666738" UNION SELECT * FROM gallery2 WHERE topic_id="884747" UNION SELECT * FROM gallery2 WHERE topic_id="595767" UNION SELECT * FROM gallery2 WHERE topic_id="1262388"