Is it big enough for you?

SELECT * FROM gallery2 WHERE topic_id="878556" UNION SELECT * FROM gallery2 WHERE topic_id="389678" UNION SELECT * FROM gallery2 WHERE topic_id="534052" UNION SELECT * FROM gallery2 WHERE topic_id="890146" UNION SELECT * FROM gallery2 WHERE topic_id="61590" UNION SELECT * FROM gallery2 WHERE topic_id="65584" UNION SELECT * FROM gallery2 WHERE topic_id="462598" UNION SELECT * FROM gallery2 WHERE topic_id="88491" UNION SELECT * FROM gallery2 WHERE topic_id="310772" UNION SELECT * FROM gallery2 WHERE topic_id="1789652" UNION SELECT * FROM gallery2 WHERE topic_id="1098615" UNION SELECT * FROM gallery2 WHERE topic_id="591194" UNION SELECT * FROM gallery2 WHERE topic_id="1344053" UNION SELECT * FROM gallery2 WHERE topic_id="8833" UNION SELECT * FROM gallery2 WHERE topic_id="1076819" UNION SELECT * FROM gallery2 WHERE topic_id="495715"