查询中的Where子句
问题描述:
我的查询看起来像这样。假设它运行得很好.im混淆了的最后部分Where where clause.Can我可以从两个不同的表中写出来吗?..我怎么写它,因为我想显示那些来自该日期范围的Active的工作人员。查询中的Where子句
select d.Division,a.FirstName,
(select count(h.id) from Department h
inner join institution i on d.institution_id = i_Id
----
----
where i.institution_id =d.Id and h. date between @startDate and @endDate) as test
from Division d, inmate a
where d.Active = 1 and a.Active = 1
编辑 我有我的编辑查询和最终看起来像这样..
select d.DivisionName,a.FirstName, (select count(h.id) from InHistory h inner join Institution i on h.Institution_id = i.Id inner join InType it on h.InType_id = it.Id inner join mate a on h.mate_id = a.Id where i.InstitutionRegion_id = d.Id and it.InTypeName like '%Staff%' and h.AdmissionDate between '18/02/2013' and '18/02/2013') as Admission from Division d, mate a where d.Active= 1 and a.Active =1
答
,只要你想从您的SQL查询的WHERE子句里面可以添加尽可能多的..
看到一个例子
SELECT *
FROM employee inner join department on
employee.DepartmentID = department.DepartmentID;
WHERE
employee.active = TRUE AND
department.group = 3
是不是已经在做你想做的事了?它在两个不同的表上测试条件。 – Patashu 2013-02-25 03:42:54
为什么你在子查询中加入并使用这些连接进行外部查询? – andho 2013-02-25 03:44:44
如果我没有弄错,是的,你可以 – c0dem0nkey 2013-02-25 03:46:44