Sql 如何根据月份名称查找记录？

我有一个疑问：

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

我不想指定完整日期，而是希望能够使用如下方式选择3月份开具的发票：

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

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我如何才能做到这一点？

为以下内容创建实例

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

对象（完整的日期时间格式）。解析（“2014-01-21 12:39:20.593 Am”）

仅用于选择月份

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

使用

DATENAME（）

：

---

其显示错误，如为datepart指定的参数1无效。

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