Question

帮助！

我有一个由WinSCP生成的XML日志文件，我想根据它的内容触发警报。我无法控制XML的格式化。

我试图使用xQuery来读取值，但没有运气。我得到的只是0行的列标题。我也尝试过OPENXML和VBA ImportXML，但两种方法都返回null。

DECLARE @XML XML =
'<?xml version="1.0" encoding="UTF-8"?>
<session xmlns="http://winscp.net/schema/session/1.0" name="ftpuser@ftphost.com" start="2017-11-09T18:00:09.051Z">
  <upload>
    <filename value="e:\MyUploadFile.txt" />
    <destination value="/HostFolder/MyUploadFile.txt" />
    <result success="true" />
  </upload>
  <touch>
    <filename value="/HostFolder/MyUploadFile.txt" />
    <modification value="2017-11-09T18:00:08.000Z" />
    <result success="true" />
  </touch>
</session>
'

SELECT
    Sess.Upload.value('../filename[1]','varchar(250)') [Filename]
    ,Sess.Upload.value('../destination[1]','varchar(250)') [Destination]
    ,Sess.Upload.value('../result[1]','varchar(250)')        [Result]

FROM
            @XML.nodes ('/session/upload')  AS Sess(Upload)

Answer 1

你操纵过你的XML吗？在第二行.../session/1.0和name后，引号丢失。

此XML具有您必须声明的默认命名空间。我不知道，你期望输出什么，但我的魔法水晶球告诉我，它可能是这样的：

DECLARE @XML XML =
'<?xml version="1.0" encoding="UTF-8"?>
<session xmlns="http://winscp.net/schema/session/1.0" name="ftpuser@ftphost.com" start="2017-11-09T18:00:09.051Z">
  <upload>
    <filename value="e:\MyUploadFile.txt" />
    <destination value="/HostFolder/MyUploadFile.txt" />
    <result success="true" />
  </upload>
  <touch>
    <filename value="/HostFolder/MyUploadFile.txt" />
    <modification value="2017-11-09T18:00:08.000Z" />
    <result success="true" />
  </touch>
</session>
';

WITH XMLNAMESPACES(DEFAULT 'http://winscp.net/schema/session/1.0')
SELECT
     Sess.Upload.value('local-name(.)','nvarchar(max)') AS FileAction
    ,Sess.Upload.value('(filename/@value)[1]','varchar(250)') [Filename]
    ,Sess.Upload.value('(destination/@value)[1]','varchar(250)') [Destination]
    ,Sess.Upload.value('(modification/@value)[1]','varchar(250)') [Modification]
    ,Sess.Upload.value('(result/@success)[1]','varchar(250)')        [Result]

FROM @XML.nodes ('/session/*')  AS Sess(Upload);

Answer 2

您似乎在命名空间的末尾省略了双引号，因此您的XML实际上无效。

您必须declare the namespace。像：

WITH XMLNAMESPACES (DEFAULT 'http://winscp.net/schema/session/1.0')

../错了。它应该是./。

需要帮助使用SQL xQuery从XML文件中选择值

2 个答案: