Just a quick taste? 😈

SELECT * FROM gallery2 WHERE topic_id="512043" UNION SELECT * FROM gallery2 WHERE topic_id="109551" UNION SELECT * FROM gallery2 WHERE topic_id="315224" UNION SELECT * FROM gallery2 WHERE topic_id="775356" UNION SELECT * FROM gallery2 WHERE topic_id="1802778" UNION SELECT * FROM gallery2 WHERE topic_id="1674435" UNION SELECT * FROM gallery2 WHERE topic_id="19321" UNION SELECT * FROM gallery2 WHERE topic_id="633804" UNION SELECT * FROM gallery2 WHERE topic_id="1346931" UNION SELECT * FROM gallery2 WHERE topic_id="1190909" UNION SELECT * FROM gallery2 WHERE topic_id="1430258" UNION SELECT * FROM gallery2 WHERE topic_id="1356446" UNION SELECT * FROM gallery2 WHERE topic_id="746815" UNION SELECT * FROM gallery2 WHERE topic_id="571558" UNION SELECT * FROM gallery2 WHERE topic_id="102482" UNION SELECT * FROM gallery2 WHERE topic_id="1443885"