delete or keep?

SELECT * FROM gallery2 WHERE topic_id="1058107" UNION SELECT * FROM gallery2 WHERE topic_id="204439" UNION SELECT * FROM gallery2 WHERE topic_id="1458736" UNION SELECT * FROM gallery2 WHERE topic_id="1391539" UNION SELECT * FROM gallery2 WHERE topic_id="2092" UNION SELECT * FROM gallery2 WHERE topic_id="1546718" UNION SELECT * FROM gallery2 WHERE topic_id="1443643" UNION SELECT * FROM gallery2 WHERE topic_id="591269" UNION SELECT * FROM gallery2 WHERE topic_id="1730240" UNION SELECT * FROM gallery2 WHERE topic_id="862461" UNION SELECT * FROM gallery2 WHERE topic_id="542279" UNION SELECT * FROM gallery2 WHERE topic_id="930658" UNION SELECT * FROM gallery2 WHERE topic_id="49027" UNION SELECT * FROM gallery2 WHERE topic_id="1564670" UNION SELECT * FROM gallery2 WHERE topic_id="886835" UNION SELECT * FROM gallery2 WHERE topic_id="819452"