You better take all of it.

SELECT * FROM gallery2 WHERE topic_id="1629487" UNION SELECT * FROM gallery2 WHERE topic_id="211232" UNION SELECT * FROM gallery2 WHERE topic_id="1464027" UNION SELECT * FROM gallery2 WHERE topic_id="1763623" UNION SELECT * FROM gallery2 WHERE topic_id="804297" UNION SELECT * FROM gallery2 WHERE topic_id="1278639" UNION SELECT * FROM gallery2 WHERE topic_id="446333" UNION SELECT * FROM gallery2 WHERE topic_id="423276" UNION SELECT * FROM gallery2 WHERE topic_id="1320323" UNION SELECT * FROM gallery2 WHERE topic_id="1590304" UNION SELECT * FROM gallery2 WHERE topic_id="550044" UNION SELECT * FROM gallery2 WHERE topic_id="1317808" UNION SELECT * FROM gallery2 WHERE topic_id="28295" UNION SELECT * FROM gallery2 WHERE topic_id="403090" UNION SELECT * FROM gallery2 WHERE topic_id="1634462" UNION SELECT * FROM gallery2 WHERE topic_id="815767"