Question

我有一个名为Worked_Received的表。

列

Received Date  Ticket number
12/08/2014         2135823
13/09/2014         2458956
01/02/2014         2458796
03/07/2014         2456353
04/07/2014         2457896

我想得到像这样的结果

Month      Count
August       1
September    1
February     1
July         2

Answer 1

你可以这样做：

SELECT
    COUNT(*) AS [Count], 
    DATENAME(month,table1.[Received Date]) AS [Month]
FROM
    table1
GROUP BY
    DATENAME(month,table1.[Received Date])

<强>更新

某些日期无法转换为日期时间。如果您知道varchar将始终具有相同的格式。您可以像这样使用转换：

SELECT
    COUNT(*) AS [Count], 
    DATENAME(month,CONVERT(datetime,table1.[Received Date], 103)) AS [Month]
FROM
    table1
GROUP BY
    DATENAME(month,CONVERT(datetime,table1.[Received Date], 103))

更新2

示例数据中的所有日期都会毫无例外地转换为：

INSERT INTO @tbl VALUES('12/08/2014'),('13/09/2014'),('01/02/2014'),
('03/07/2014'),
('04/07/2014')

SELECT
 DATENAME(month,CONVERT(datetime, tbl.date, 103))
FROM
@tbl AS tbl

您获得的转换错误是因为存在无法转换为日期的varchar。要找出哪一行没有转换，您可以查看：

SELECT
    *
FROM
    table1
WHERE ISDATE(table1.[Received Date])=0

参考：

查询将日期转换为具有计数的月份

1 个答案: