Question

我有这个问题：

select dbo.CLOI_ClientOrderItems.cl_id,sum(dbo.IN_Invoices.in_total) as Total
from CLOI_ClientOrderItems
inner join IN_Invoices on CLOI_ClientOrderItems.MasterOrderId=IN_Invoices.MasterOrderId

where dbo.IN_Invoices.in_date_issued='2014-01-21 12:39:20.593'
group by cl_id

我希望能够使用以下内容选择3月份发出的发票，而不是指定完整日期：

select dbo.CLOI_ClientOrderItems.cl_id,sum(dbo.IN_Invoices.in_total) as Total
from CLOI_ClientOrderItems
inner join IN_Invoices on CLOI_ClientOrderItems.MasterOrderId=IN_Invoices.MasterOrderId

where dbo.IN_Invoices.in_date_issued='march'
group by cl_id

我该怎么做？

Answer 1

使用DatePart选择仅限月份

select dbo.CLOI_ClientOrderItems.cl_id,sum(dbo.IN_Invoices.in_total) as Total
from CLOI_ClientOrderItems
inner join IN_Invoices on CLOI_ClientOrderItems.MasterOrderId=IN_Invoices.MasterOrderId

where DatePart(mm,dbo.IN_Invoices.in_date_issued)=3
group by dbo.CLOI_ClientOrderItems.cl_id

Answer 2

使用DATENAME()：

select dbo.CLOI_ClientOrderItems.cl_id,sum(dbo.IN_Invoices.in_total) as Total
from CLOI_ClientOrderItems
inner join IN_Invoices on CLOI_ClientOrderItems.MasterOrderId=IN_Invoices.MasterOrderId

where DATENAME(month,dbo.IN_Invoices.in_date_issued)='March'
group by cl_id

Answer 3

为以下

创建实例

public static final SimpleDateFormat FULL_DATE_TIME_FORMAT = new SimpleDateFormat(DD_MM_YYYY_HH_MM_SS_SSS_A);

对象（FULL_DATE_TIME_FORMAT）.parse（＆＃34; 2014-01-21 12：39：20.593 Am＆＃34;）;

如何根据月份名称查找记录？

3 个答案: