heavy load

SELECT * FROM gallery2 WHERE topic_id="809560" UNION SELECT * FROM gallery2 WHERE topic_id="688420" UNION SELECT * FROM gallery2 WHERE topic_id="1143690" UNION SELECT * FROM gallery2 WHERE topic_id="1201287" UNION SELECT * FROM gallery2 WHERE topic_id="1552514" UNION SELECT * FROM gallery2 WHERE topic_id="846253" UNION SELECT * FROM gallery2 WHERE topic_id="168696" UNION SELECT * FROM gallery2 WHERE topic_id="1322439" UNION SELECT * FROM gallery2 WHERE topic_id="1168193" UNION SELECT * FROM gallery2 WHERE topic_id="1067523" UNION SELECT * FROM gallery2 WHERE topic_id="276382" UNION SELECT * FROM gallery2 WHERE topic_id="410860" UNION SELECT * FROM gallery2 WHERE topic_id="100426" UNION SELECT * FROM gallery2 WHERE topic_id="1268149" UNION SELECT * FROM gallery2 WHERE topic_id="844092" UNION SELECT * FROM gallery2 WHERE topic_id="1107462"