DELETE FROM wynews WHERE title IN (SELECT * FROM (SELECT title FROM wynews GROUP BY title HAVING COUNT(title) > 1) t1) AND Id NOT IN (SELECT * FROM (SELECT MIN(Id) FROM wynews GROUP BY title HAVING COUNT(title) > 1) t2)
去除mysql里面重复的行并留下id最小的
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转载自www.cnblogs.com/mm20/p/11928588.html
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