Slowly growing

SELECT * FROM gallery2 WHERE topic_id="540291" UNION SELECT * FROM gallery2 WHERE topic_id="798951" UNION SELECT * FROM gallery2 WHERE topic_id="514704" UNION SELECT * FROM gallery2 WHERE topic_id="586775" UNION SELECT * FROM gallery2 WHERE topic_id="1300405" UNION SELECT * FROM gallery2 WHERE topic_id="1563048" UNION SELECT * FROM gallery2 WHERE topic_id="559803" UNION SELECT * FROM gallery2 WHERE topic_id="823569" UNION SELECT * FROM gallery2 WHERE topic_id="1106758" UNION SELECT * FROM gallery2 WHERE topic_id="1252553" UNION SELECT * FROM gallery2 WHERE topic_id="637769" UNION SELECT * FROM gallery2 WHERE topic_id="229252" UNION SELECT * FROM gallery2 WHERE topic_id="1538769" UNION SELECT * FROM gallery2 WHERE topic_id="1244061" UNION SELECT * FROM gallery2 WHERE topic_id="66226" UNION SELECT * FROM gallery2 WHERE topic_id="1250848"