标签：where div from 大于等于 join AC max ack 保留
select count(distinct domain) from black_botnet_domian;
SELECT goods_id,goods_name FROM tdb_goods GROUP BY goods_name HAVING COUNT(goods_name)>=2;
DELETE t1 FROM tdb_goods AS t1 LEFT JOIN( SELECT goods_id,goods_name FROM tdb_goods GROUP BY goods_name HAVING COUNT(goods_name)>=2) AS t2 ON t1.goods_name = t2.goods_name WHERE t1.goods_id>t2.goods_id;
DELETE t1 FROM tdb_goods AS t1 LEFT JOIN( SELECT max(goods_id) AS goods_id,goods_name FROM tdb_goods GROUP BY goods_name HAVING COUNT(goods_name)>=2) AS t2 ON t1.goods_name = t2.goods_name WHERE t1.goods_id<t2.goods_id;
标签：where div from 大于等于 join AC max ack 保留
原文地址：https://www.cnblogs.com/luxiaojun/p/9070926.html
