我一直试图从我在SQL2008r2中编写的扩展事件中抓取信息,试图在SQL上创建一些更好的错误跟踪形式。
经过大量的试验和错误,我最终得到了一个工作,但它似乎只返回第一行。我试图将信息读入CTE,然后我可以对数据进行额外处理并以不同的格式返回
我写的是什么
;with events_cte as(
select
DATEADD(mi,
DATEDIFF(mi, GETUTCDATE(), CURRENT_TIMESTAMP),
xevents.event_data.value('(RingBufferTarget/event/@timestamp)[1]', 'datetime2')) AS [Timestamp],
xevents.event_data.value('(RingBufferTarget/event/data[@name="severity"]/value)[1]', 'bigint') AS [Error Severity],
xevents.event_data.value('(RingBufferTarget/event/data[@name="message"]/value)[1]', 'nvarchar(512)') AS [Error Message],
xevents.event_data.value('(RingBufferTarget/event/action[@name="sql_text"]/value)[1]', 'nvarchar(max)') AS [SQL Text],
xevents.event_data.value('(RingBufferTarget/event/action[@name="username"]/value)[1]', 'nvarchar(max)') AS [Username],
xevents.event_data.value('(RingBufferTarget/event/action[@name="database_id"]/value)[1]', 'nvarchar(max)') AS [DatabaseID]
From(Select CAST(xet.target_data AS xml) as event_data
FROM sys.dm_xe_session_targets xet
INNER JOIN sys.dm_xe_sessions xe
ON (xe.address = xet.event_session_address)
WHERE xe.name = 'what_queries_are_failing') as xevents)
我正在使用的(示例)
<RingBufferTarget eventsPerSec="0" processingTime="0" totalEventsProcessed="55" eventCount="55" droppedCount="0" memoryUsed="161803">
<event name="error_reported" package="sqlserver" id="100" version="1" timestamp="2016-12-15T01:42:59.361Z">
<data name="error">
<type name="int32" package="package0" />
<value>50000</value>
<text />
</data>
<data name="severity">
<type name="int32" package="package0" />
<value>16</value>
<text />
</data>
<data name="state">
<type name="int32" package="package0" />
<value>1</value>
<text />
</data>
<data name="user_defined">
<type name="boolean" package="package0" />
<value>true</value>
<text />
</data>
<data name="message">
<type name="unicode_string" package="package0" />
<value>User Defined Exception!!!</value>
<text />
</data>
<action name="client_hostname" package="sqlserver">
<type name="unicode_string" package="package0" />
<value>hostname</value>
<text />
</action>
<action name="database_id" package="sqlserver">
<type name="uint16" package="package0" />
<value>1</value>
<text />
</action>
<action name="sql_text" package="sqlserver">
<type name="unicode_string" package="package0" />
<value>RAISERROR('User Defined Exception!!!', 16, 1)
</value>
<text />
</action>
<action name="tsql_stack" package="sqlserver">
<type name="unicode_string" package="package0" />
<value><frame level='1' handle='0x010001001561AB09005F28B1000000000000000000000000' line='1' offsetStart='0' offsetEnd='-1'/></value>
<text />
</action>
<action name="username" package="sqlserver">
<type name="unicode_string" package="package0" />
<value>user</value>
<text />
</action>
</event>
<event name="error_reported" package="sqlserver" id="100" version="1" timestamp="2016-12-15T01:42:59.361Z">
<data name="error">
<type name="int32" package="package0" />
<value>50000</value>
<text />
</data>
<data name="severity">
<type name="int32" package="package0" />
<value>16</value>
<text />
</data>
<data name="state">
<type name="int32" package="package0" />
<value>1</value>
<text />
</data>
<data name="user_defined">
<type name="boolean" package="package0" />
<value>true</value>
<text />
</data>
<data name="message">
<type name="unicode_string" package="package0" />
<value>User Defined Exception!!!</value>
<text />
</data>
<action name="client_hostname" package="sqlserver">
<type name="unicode_string" package="package0" />
<value>hostname</value>
<text />
</action>
<action name="database_id" package="sqlserver">
<type name="uint16" package="package0" />
<value>1</value>
<text />
</action>
<action name="sql_text" package="sqlserver">
<type name="unicode_string" package="package0" />
<value>RAISERROR('User Defined Exception!!!', 16, 1)
</value>
<text />
</action>
<action name="tsql_stack" package="sqlserver">
<type name="unicode_string" package="package0" />
<value><frame level='1' handle='0x010001001561AB09005F28B1000000000000000000000000' line='1' offsetStart='0' offsetEnd='-1'/></value>
<text />
</action>
<action name="username" package="sqlserver">
<type name="unicode_string" package="package0" />
<value>user</value>
<text />
</action>
</event>
</RingBufferTarget>
我得到的结果:似乎只返回一行,可能是CTE吗?
所以我的问题是:
如何获取XML中的其余记录?
非常感谢任何帮助或建议。
答案 0 :(得分:0)
您必须进行以下更改:
[1]
FROM sys.dm_xe_session_targets xet
INNER JOIN sys.dm_xe_sessions xe ON (xe.address = xet.event_session_address)
OUTER APPLY xevents.event_data.nodes('RingBufferTarget/event') AS x(XmlCol)
[2]来自
xevents.event_data.value('(RingBufferTarget/event/@timestamp)[1]', 'datetime2')) AS [Timestamp],
xevents.event_data.value('(RingBufferTarget/event/data[@name="severity"]/value...
到
x.XmlCol.value('(@timestamp)[1]', 'datetime2')) AS [Timestamp],
x.XmlCol.value('(data[@name="severity"]/value...