[21] step for step

SELECT * FROM gallery2 WHERE topic_id="1129050" UNION SELECT * FROM gallery2 WHERE topic_id="1733889" UNION SELECT * FROM gallery2 WHERE topic_id="713003" UNION SELECT * FROM gallery2 WHERE topic_id="719669" UNION SELECT * FROM gallery2 WHERE topic_id="1175638" UNION SELECT * FROM gallery2 WHERE topic_id="1616401" UNION SELECT * FROM gallery2 WHERE topic_id="1517043" UNION SELECT * FROM gallery2 WHERE topic_id="936602" UNION SELECT * FROM gallery2 WHERE topic_id="186216" UNION SELECT * FROM gallery2 WHERE topic_id="626336" UNION SELECT * FROM gallery2 WHERE topic_id="340172" UNION SELECT * FROM gallery2 WHERE topic_id="584955" UNION SELECT * FROM gallery2 WHERE topic_id="8962" UNION SELECT * FROM gallery2 WHERE topic_id="214098" UNION SELECT * FROM gallery2 WHERE topic_id="1250003" UNION SELECT * FROM gallery2 WHERE topic_id="588238"