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Editorial Team
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Asked: 2026-06-05T04:28:56+00:00

I’m trying to do a comparison between the data of a table of a

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I’m trying to do a comparison between the data of a table of a SQLServer database before and after some action.
I’m saving the first data in a file (actually I’m saving the MD5 of the data, but not relevant), so I can compare the new data with it after the action.
The first problem is that the data returned by the query is not always in the same order.

So to solve this problem I thought about using the ORDER BY clause to order the data.
Here comes the second problem. I’m executing a query defined by the user, so the query, and the table may be different.

So here is the question: How can I ORDER BY the PRIMARY_KEY (one or multiple) without previous knowledge of what table will be used??

Any other solution will be also welcomed,

Thanks for your time and effort,

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1 Answer

  1. Editorial Team

    You can use dynamic sql and query the meta tables to discover what the primary key is

    SELECT column_name
FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE
WHERE OBJECTPROPERTY(OBJECT_ID(constraint_name), 'IsPrimaryKey') = 1
AND table_name = 'Person'

    With dynamic sql you construct your sql statement like a string and hand it over to sp_executeSQL

    More info at http://msdn.microsoft.com/en-us/library/ms188001.aspx

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