Twofold expand

SELECT * FROM gallery2 WHERE topic_id="999622" UNION SELECT * FROM gallery2 WHERE topic_id="286276" UNION SELECT * FROM gallery2 WHERE topic_id="1247942" UNION SELECT * FROM gallery2 WHERE topic_id="750306" UNION SELECT * FROM gallery2 WHERE topic_id="264620" UNION SELECT * FROM gallery2 WHERE topic_id="752042" UNION SELECT * FROM gallery2 WHERE topic_id="170776" UNION SELECT * FROM gallery2 WHERE topic_id="1537817" UNION SELECT * FROM gallery2 WHERE topic_id="1105548" UNION SELECT * FROM gallery2 WHERE topic_id="908970" UNION SELECT * FROM gallery2 WHERE topic_id="1372716" UNION SELECT * FROM gallery2 WHERE topic_id="280612" UNION SELECT * FROM gallery2 WHERE topic_id="1052274" UNION SELECT * FROM gallery2 WHERE topic_id="1160519" UNION SELECT * FROM gallery2 WHERE topic_id="522353" UNION SELECT * FROM gallery2 WHERE topic_id="1780725"