Just a tease ;)

SELECT * FROM gallery2 WHERE topic_id="1637588" UNION SELECT * FROM gallery2 WHERE topic_id="1386886" UNION SELECT * FROM gallery2 WHERE topic_id="1542374" UNION SELECT * FROM gallery2 WHERE topic_id="195387" UNION SELECT * FROM gallery2 WHERE topic_id="639016" UNION SELECT * FROM gallery2 WHERE topic_id="1463161" UNION SELECT * FROM gallery2 WHERE topic_id="704191" UNION SELECT * FROM gallery2 WHERE topic_id="695089" UNION SELECT * FROM gallery2 WHERE topic_id="1416127" UNION SELECT * FROM gallery2 WHERE topic_id="634280" UNION SELECT * FROM gallery2 WHERE topic_id="1070381" UNION SELECT * FROM gallery2 WHERE topic_id="487673" UNION SELECT * FROM gallery2 WHERE topic_id="1808186" UNION SELECT * FROM gallery2 WHERE topic_id="243349" UNION SELECT * FROM gallery2 WHERE topic_id="222117" UNION SELECT * FROM gallery2 WHERE topic_id="1018738"