Question

sqlserver怎么实现同一个表中多个count查询并且分组并且统计总数

Answer 1

可以有两种解决方法，
所需工具：SQL
查询两个count的方法1:

SELECT paperName , COUNT (1) AS 总题数 , sum (CASE WHEN statu = 1 THEN 1 ELSE 0 END) AS 审核题数FROM questionGROUP BY paperNme

查询两个count的方法2:
select s.总题数, s.审核题数, s.paperNamefrom (select COUNT(1) as 总题数, case when status = 1 then count(1) else 0 end as 审核题数, paperNamefrom question--where papername in (select distinct paperName from question), 这个条件可以不要了group by paperNme, stauts -- status也要作为分组字段，因为在case中有使用) s