SQL查询根据MM-YYYY部分日期进行计数

Question

我需要根据＆amp ;;显示过去12个月的工作申请数。需要根据工作申请日期对他们进行分组

我尝试按照它生成错误，如下所示。

SELECT 
   COUNT(MONTH(ApplicationDate) AS VARCHAR(2)) + '-' + CAST(YEAR(ApplicationDate) AS VARCHAR(4)) AS Total, 
   ApplicationDate 
FROM 
   [Jobs] 
GROUP BY 
   ApplicationDate, ApplicationDate 
ORDER BY
   ApplicationDate 

但这导致了一个错误：

  

Msg 195，Level 15，State 10，Line 9
  'COUNT'不是公认的内置函数名称。

我需要它用于SQL Server 2008

最终工作解决方案

SELECT   
MONTH(ApplicationDate),   YEAR(ApplicationDate),   COUNT(*) AS Total, 
    (CAST(MONTH(ApplicationDate) AS VARCHAR(2)) + '-' + CAST(YEAR(ApplicationDate) AS VARCHAR(4)))  as ApplicationDate
    FROM    [Jobs] 
GROUP BY    YEAR(ApplicationDate),   MONTH(ApplicationDate)

ORDER BY
       YEAR(ApplicationDate),   MONTH(ApplicationDate)

Answer 1

你需要尝试这样的事情，每个月/每年获得一行，其中包含该月/年的应用数量：

SELECT
   MONTH(ApplicationDate),
   YEAR(ApplicationDate),
   COUNT(*)
FROM 
   dbo.[Jobs] 
GROUP BY 
   YEAR(ApplicationDate),
   MONTH(ApplicationDate)
ORDER BY
   YEAR(ApplicationDate),
   MONTH(ApplicationDate)

这也计算每月/每年的应用程序和组。你应该得到这样的输出：

（这取自AdventureWorks示例数据库）

如果您执行了GROUP BY ApplicationDate，那么您基本上按实际的日期本身进行分组/计数（不是它的月/年部分）

更新：如果您必须让SQL Server提供MM-YYYY格式的格式（真的应该在您的网络应用中完成，而不是由SQL Server完成） ），然后试试这个：

;WITH GroupedData AS
(
    SELECT
       DateMonth = MONTH(ApplicationDate),
       DateYear = YEAR(ApplicationDate),
       JobsCount = COUNT(*)
    FROM 
       dbo.[Jobs]
    GROUP BY 
       YEAR(ApplicationDate),
       MONTH(ApplicationDate)
)
SELECT
    RIGHT('00' + CAST(DateMonth AS VARCHAR(2)), 2) + '-' +
    CAST(DateYear AS VARCHAR(4)),
    JobsCount 
FROM 
    GroupedData
ORDER BY
    DateMonth, DateYear

Answer 2

这个怎么样？

 SELECT 
       COUNT(*) AS Total, 
       (CAST(MONTH(ApplicationDate) AS VARCHAR(2)) + '-' + CAST(YEAR(ApplicationDate) AS VARCHAR(4)))  as ApplicationDate 
    FROM 
       [Jobs]  
    GROUP BY 
       (CAST(MONTH(ApplicationDate) AS VARCHAR(2)) + '-' + CAST(YEAR(ApplicationDate) AS VARCHAR(4))) 
    ORDER BY
      ApplicationDate 

一个月失去了演员表演功能。输出如下。

Total   ApplicationDate
22217   7-2012
17979   8-2012
30341   9-2012

编辑排序......

如果您不特别关注'MM-YYYY'格式。将月/年组合转换为数字和顺序。试试这个。

 SELECT 
   COUNT(*) AS Total, 
   RIGHT(CONVERT(VARCHAR(10), ApplicationDate, 103), 7)  as ApplicationDate, 
   CAST(REPLACE(RIGHT(CONVERT(VARCHAR(10), ApplicationDate, 103), 7), '/', '') as int) as numdate
FROM 
   [Jobs] 
GROUP BY 
   RIGHT(CONVERT(VARCHAR(10), ApplicationDate, 103), 7)
ORDER BY
  numdate,ApplicationDate

Answer 3

试试这个...

SELECT  DATENAME(month,ApplicationDate) + ' ' + CAST(DATEPART(year,ApplicationDate) AS VARCHAR(4)),
        COUNT(1) TotalCnt
FROM    dbo.[Jobs] 
GROUP BY DATENAME(month,ApplicationDate) + ' ' + CAST(DATEPART(year,ApplicationDate) AS VARCHAR(4))