DELETE FROM spider_927
WHERE 1=1
AND title in (SELECT * FROM ( (SELECT title titles FROM spider_927 GROUP BY title HAVING COUNT(title)>1) ) a)
AND id not in (SELECT * FROM ( (SELECT MIN(id) ids FROM spider_927 GROUP BY title HAVING COUNT(title)>1) ) b)
Remove duplicates, leaving only the smallest one id
Guess you like
Origin www.cnblogs.com/xiujin/p/11515744.html
Ranking