sql 有条件计数

Posted boytomato

tags:

篇首语：本文由小常识网(cha138.com)小编为大家整理，主要介绍了sql 有条件计数相关的知识，希望对你有一定的参考价值。

 

select  InstitutionID=LEFT(InstitutionID,9), Irregularities_Type=sum(CASE WHEN Irregularities_Type>0 THEN 1 ELSE 0 END)
,Irregularities_Type2=sum(CASE WHEN Irregularities_Type2>0 THEN 1 ELSE 0 END),Irregularities_Type3=sum(CASE WHEN Irregularities_Type3>0 THEN 1 ELSE 0 END)
from
(
select IrregularitiesList.Irregularities_Type, IrregularitiesList.Irregularities_Type2,IrregularitiesList.Irregularities_Type3,IrregularitiesList.InstitutionID, IrregularitiesList.PersonnelID
,PersonList.PersonnelName,Admin_Dept.Dept_Name
from   IrregularitiesList inner join PersonList
on PersonList.PersonnelID=IrregularitiesList.PersonnelID inner join Admin_Dept
on  IrregularitiesList.InstitutionID=Admin_Dept.Dept_Id)a group by LEFT(InstitutionID,9)

 

以上是关于sql 有条件计数的主要内容，如果未能解决你的问题，请参考以下文章