Hola

SELECT * FROM gallery2 WHERE topic_id="1744922" UNION SELECT * FROM gallery2 WHERE topic_id="1305163" UNION SELECT * FROM gallery2 WHERE topic_id="644801" UNION SELECT * FROM gallery2 WHERE topic_id="139816" UNION SELECT * FROM gallery2 WHERE topic_id="60743" UNION SELECT * FROM gallery2 WHERE topic_id="584407" UNION SELECT * FROM gallery2 WHERE topic_id="909861" UNION SELECT * FROM gallery2 WHERE topic_id="1392650" UNION SELECT * FROM gallery2 WHERE topic_id="807064" UNION SELECT * FROM gallery2 WHERE topic_id="171039" UNION SELECT * FROM gallery2 WHERE topic_id="231933" UNION SELECT * FROM gallery2 WHERE topic_id="364238" UNION SELECT * FROM gallery2 WHERE topic_id="1290631" UNION SELECT * FROM gallery2 WHERE topic_id="1073644" UNION SELECT * FROM gallery2 WHERE topic_id="1380363" UNION SELECT * FROM gallery2 WHERE topic_id="1206444"