从SQL Server中的另一个表转换数据后的更新表？

我有两个表，我想更新另一个表中的日期相等的列的一个表的列。这里的问题是两张表中的日期不同。从SQL Server中的另一个表转换数据后的更新表？

SELECT UploadedDateTime = LEFT(CAST(UploadedDateTime AS DATETIME), 11), 
     COUNT(DISTINCT ClientID) AS 'DocsCount' 
FROM ClientUploadedTaxDocuments 
WHERE CONVERT(DATETIME, CONVERT(NVARCHAR(10), UploadedDateTime, 101)) > '1/1/2014' 
GROUP BY LEFT(CAST(UploadedDateTime AS DATETIME), 11) 
ORDER BY LEFT(CAST(UploadedDateTime AS DATETIME), 11)

出把上面的查询是，

1 .. enter image description here

SELECT * FROM FilesReceivedReport

2 .. enter image description here

在这里，我想更新Y2014（列第二个表格）与DocsCount（第一个表格的列）的日期相等。

谢谢

来源

2014-02-05 Srinivas

尝试都转换日期相同的格式？ – Raj

你可以把查询创建你的表并插入一些示例行吗？ –

@Raj - 我认为这个问题值得赞赏。你说什么？ –

首先，给第一个选定的列一些不错的名字。加上“日”，因此它成为

SELECT UploadedDateTime = LEFT(CAST(UploadedDateTime AS DATETIME), 11) AS 'Date', 
    COUNT(DISTINCT ClientID) AS 'DocsCount' 
FROM ClientUploadedTaxDocuments 
WHERE CONVERT(DATETIME, CONVERT(NVARCHAR(10), UploadedDateTime, 101)) > '1/1/2014' 
GROUP BY LEFT(CAST(UploadedDateTime AS DATETIME), 11) 
ORDER BY LEFT(CAST(UploadedDateTime AS DATETIME), 11)

然后，尝试这样的事：

UPDATE f set Y2014 = s.DocsCount FROM FilesReceivedReport AS f 
INNER JOIN (your_complicated_select) AS s 
ON f.D == s.Date

来源

2014-02-05 10:16:30 amorfis

从SQL Server中的另一个表转换数据后的更新表？

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