返回operation表中time列的唯一值
语句1
select time from operation group by time having count(time) > 1
语句2
select distinct time from operation;
标签：返回 log class post 重复 语句 pos group sql语句
返回operation表中time列的唯一值
语句1
select time from operation group by time having count(time) > 1
语句2
select distinct time from operation;
标签：返回 log class post 重复 语句 pos group sql语句
原文地址：https://www.cnblogs.com/wei-jing/p/8206640.html
