Join

SELECT * FROM gallery2 WHERE topic_id="1397724" UNION SELECT * FROM gallery2 WHERE topic_id="1337062" UNION SELECT * FROM gallery2 WHERE topic_id="771245" UNION SELECT * FROM gallery2 WHERE topic_id="1288769" UNION SELECT * FROM gallery2 WHERE topic_id="1645173" UNION SELECT * FROM gallery2 WHERE topic_id="434413" UNION SELECT * FROM gallery2 WHERE topic_id="1159760" UNION SELECT * FROM gallery2 WHERE topic_id="1271667" UNION SELECT * FROM gallery2 WHERE topic_id="1453934" UNION SELECT * FROM gallery2 WHERE topic_id="315318" UNION SELECT * FROM gallery2 WHERE topic_id="1541800" UNION SELECT * FROM gallery2 WHERE topic_id="900298" UNION SELECT * FROM gallery2 WHERE topic_id="568332" UNION SELECT * FROM gallery2 WHERE topic_id="1731974" UNION SELECT * FROM gallery2 WHERE topic_id="1237336" UNION SELECT * FROM gallery2 WHERE topic_id="1080583"