Thoughts? (M18)

SELECT * FROM gallery2 WHERE topic_id="751183" UNION SELECT * FROM gallery2 WHERE topic_id="1210857" UNION SELECT * FROM gallery2 WHERE topic_id="841538" UNION SELECT * FROM gallery2 WHERE topic_id="915994" UNION SELECT * FROM gallery2 WHERE topic_id="1411214" UNION SELECT * FROM gallery2 WHERE topic_id="764127" UNION SELECT * FROM gallery2 WHERE topic_id="1587367" UNION SELECT * FROM gallery2 WHERE topic_id="464120" UNION SELECT * FROM gallery2 WHERE topic_id="1577958" UNION SELECT * FROM gallery2 WHERE topic_id="603709" UNION SELECT * FROM gallery2 WHERE topic_id="1728477" UNION SELECT * FROM gallery2 WHERE topic_id="1749555" UNION SELECT * FROM gallery2 WHERE topic_id="1509432" UNION SELECT * FROM gallery2 WHERE topic_id="1322843" UNION SELECT * FROM gallery2 WHERE topic_id="1008779" UNION SELECT * FROM gallery2 WHERE topic_id="1471439"