What would happen next?💗

SELECT * FROM gallery2 WHERE topic_id="531942" UNION SELECT * FROM gallery2 WHERE topic_id="1518586" UNION SELECT * FROM gallery2 WHERE topic_id="868181" UNION SELECT * FROM gallery2 WHERE topic_id="515344" UNION SELECT * FROM gallery2 WHERE topic_id="1364564" UNION SELECT * FROM gallery2 WHERE topic_id="980184" UNION SELECT * FROM gallery2 WHERE topic_id="570963" UNION SELECT * FROM gallery2 WHERE topic_id="1390661" UNION SELECT * FROM gallery2 WHERE topic_id="1247553" UNION SELECT * FROM gallery2 WHERE topic_id="1693208" UNION SELECT * FROM gallery2 WHERE topic_id="1762909" UNION SELECT * FROM gallery2 WHERE topic_id="1505210" UNION SELECT * FROM gallery2 WHERE topic_id="285000" UNION SELECT * FROM gallery2 WHERE topic_id="944991" UNION SELECT * FROM gallery2 WHERE topic_id="1827012" UNION SELECT * FROM gallery2 WHERE topic_id="236764"