首页 \ 问答 \ 未记录的系统过程'sp_MSforeachtable'和@whereand参数(Undocumented System Procedure 'sp_MSforeachtable' and the @whereand parameter)

未记录的系统过程'sp_MSforeachtable'和@whereand参数(Undocumented System Procedure 'sp_MSforeachtable' and the @whereand parameter)

我正在尝试使用未记录的系统过程sp_MSforeachtable 。 但是我需要将受影响的表限制为以“smp”开头并且在“ dbo ”模式中的表。 我能够找到如何找到以“smp”开头的程序。 我只是这样做:

sp_MSforeachtable @command1=' print ''?''', @whereand=' and name like ''smp%''  '

但是如何使用@whereand参数过滤给定的模式?

更新 :我尝试了以下但它没有工作:

sp_MSforeachtable @command1=' print ''?''', @whereand=' and name like ''smp%'' and Left(''?'', 5)=''[dbo]'' '

更新2 :我在SQL Server 2000上运行。


I'm attempting to use the undocumented system procedure sp_MSforeachtable. But I need to restrict the affected tables to those that start with "smp" and that are in the "dbo" schema. I was able to find how to find procedures that start with "smp". I simply do:

sp_MSforeachtable @command1=' print ''?''', @whereand=' and name like ''smp%''  '

but how do I filter for a given schema using the @whereand parameter?

UPDATE: I tried the following but it didn't work:

sp_MSforeachtable @command1=' print ''?''', @whereand=' and name like ''smp%'' and Left(''?'', 5)=''[dbo]'' '

Update 2: I'm running on SQL Server 2000.


原文:https://stackoverflow.com/questions/977400
更新时间:2024-01-28 19:01

最满意答案

您可以使用该时间戳来确定上次修改文件的时间。 如果该时间比上次解析的最后修改时间戳值更新,则该文件可能已被修改,因此请重新解析它。

更好的方法是在HTTP请求中使用If-Modified-Since标头,因此如果文件自上次解析后未被修改,则可以跳过该文件的HTTP下载。


You can use that timestamp to determine when the file was last modified. If that time is newer than the last-modified timestamp value from your last parse, the file probably was modified, so re-parse it.

Even better would be to use If-Modified-Since headers in your HTTP request, so you can skip the HTTP download of the file if it has not been modified since your last parse.

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