SQL Server 按月统计订单量

Use Basket

select convert(varchar(7),Orderdate,120) as YearMonth
,OrderID
,TotalCost
into #a
from Basket.dbo.BaseOrderTracker(nolock)
where OrderDate >='2013-07-01'
and OrderDate <='2014-07-31'
and OrderTypeID = 15
and OESourceID = 2
and StageID= 10400



select * from #a

select YearMonth,
COUNT(distinct OrderID),
SUM(TotalCost)
from #a (nolock)
group by YearMonth

drop table #a

　　

DECLARE @StartDate datetime = '2014-4-1'
DECLARE @EndDate datetime = '2014-5-1'
SELECT  case when StartDate >= @StartDate then 'Y' else 'N' end  as CurrentMonth, COUNT (1 ) as icount
FROM
(
select distinct PurchasedByContactID as ContactID
from BASKET.. BaseOrderTracker(nolock )
where OrderDate>= @StartDate and OrderDate < @EndDate and OrderTypeID =15 and OESourceID = 2
and StageID= 10400
--and FulfillmentLocationID in (705 ,718, 710,711 )
) co
inner join CONTACTS.dbo .Consultants c with (nolock) on c .ContactID = co.ContactID

group by case when StartDate >= @StartDate then 'Y' else 'N' end