如何让星期几订单从星期一开始

Question

我有一张销售表，想要获得订单的星期和一周中每天的订单数量。一切似乎都有效但无论我尝试什么'周'都是非标准的。我试过SET DATEFIRST 1;但仍然没有得到我想要的结果。

SELECT DATENAME(Weekday,orderdate) AS Weekday, COUNT(orderid) AS NumOrders
FROM Sales.Orders
GROUP BY DATENAME(Weekday,orderdate);

结果：

 Weekday     |    NumOrders
   1. Wednesday      25
   2. Saturday       33
   3. Monday         100
   4. Sunday         115
   5. Thursday       87
   6. Tuesday        42

周五没有订单会导致输出没有按周开始订购吗？感谢。

Answer 1

我认为你只需要一个ORDER BY：

SELECT DATENAME(Weekday, orderdate) AS Weekday, COUNT(orderid) AS NumOrders
FROM Sales.Orders
GROUP BY DATENAME(Weekday, orderdate), DATEPART(Weekday, orderdate)
ORDER BY DATEPART(Weekday, orderdate);