使用SQL查询返回每周创建的票证数

Question

我有一张票证表，common_ticket，有一个名为creation_date的列，它保存着创建日期。

我想计算过去几个月每周创建的门票数量。我在编写SQL查询以返回此类信息时遇到问题。只要每个单独的星期有一个不同的数字，它的返回方式就不是很重要。

有没有人对如何做到这一点有任何想法？

Answer 1

类似的东西：

SELECT extract(week from creation_date), 
       extract(year from creation_date),
       count(*)
FROM tickets
GROUP BY extract(week from creation_date), 
         extract(year from creation_date)

Answer 2

这应该这样做：

SELECT [t1].[value] AS [Year], [t1].[value2] AS [Week], COUNT(*) AS [Count]
FROM (
    SELECT DATEPART(Year, [t0].[creation_date]) AS [value],
        DATEPART(Week, [t0].[creation_date]) AS [value2]
    FROM [common_ticket] AS [t0]
) AS [t1]
GROUP BY [t1].[value], [t1].[value2];