如何在MSSQL中獲取月份日期數據？

Question

我有一個查詢，我手動更改日期爲我喜歡。我該如何動態調整當前月份到日期的數據？

SELECT SUM(op.price * op.qty) 
FROM dbo.Orders o 
     INNER JOIN dbo.OrdersProduct op ON op.orderID = o.orderID 
WHERE o.ID IN (xx, xx, xx, xx) 
AND o.orderDate BETWEEN '3/1/2016' AND '3/10/16' 

Answer 1

這將讓本月至今：

SELECT SUM(op.price * op.qty) 
FROM dbo.Orders o 
     INNER JOIN dbo.OrdersProduct op ON op.orderID = o.orderID 
WHERE o.ID IN (xx, xx, xx, xx) 
     AND o.orderDate BETWEEN DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE()), 0) 
         AND 
         DATEADD(DAY, -1, DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE()) + 1, 0))