SQL Server 语句删除重复行数据

查询重复数据

SELECT * from 数据表 WHERE (turbid,rectime) in (select turbid,rectime from 数据表 group by turbid,rectime having count(*)>1)

将原表添加id列保存到新表“数据表_new”

SELECT row_number() over() as id , * into 数据表_new from 数据表 ORDER BY turbid,rectime

将不重复的数据保存到“数据表_noid”

SELECT * into 数据表_noid from 数据表_new WHERE id in (select MIN(id) from 数据表_new group by turbid,rectime)

删除id列：
alter table 数据表_noid drop column id