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sql语句统计重复数据

select 机构编码 ,count(distinct 参保号) as 就诊人次 from Agroup by 机构编码 , 参保号,convert(varchar(10),就诊时间,20)

查询重复数据的话 直接select * from table_name;就可以了啊 如果是想剔除有重复的数据,select distinct * from table;

查询重复数据,方法如下:select * from [表A] where id in (select id from [表A] group by id having count(id) >1 )

select count(ditinct 学号) from 表名 就好了!

1、可通过分组和组内计数来实现,语句如下:select a, count(*) from A Group by a2、用Group By分组:Group By + [分组字段](可以有多个).在执行了这个操作以后,数据集将根据分组字段的值将一个数据集划分成各个不同的小组.这里,分

select type,sum(value) valuefrom 表group by type

select count(字段) from tableselect count(distinct 字段) from table不相等就说明有重复字段了然后再查重复值select count(字段) as total,字段 from table where total > 1 group by 字段

如果后面地址都是一样,那么还可以这样 select * from 表A where name in (select distinct name from 表B ) 或者用Group by 也行

select brrr,COUNT(BRRR) FROM XXX GROUP BY BRRR

select * from tablename where 重复字段1 in (select 重复字段1 from tablename group by 重复字段1,重复字段2 having count(*)>1). SQL重复记录查询方法:1、查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断 select *

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