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SQL Errors such as "column does not belong to table" occur randomly 

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If an error such as "column "x" does not belong to table "y"" occurs randomly within an ASP.NET site care should be taken to ensure that a single SQLConnection object is not accessed from multiple threads.

There are a couple of scenarios where this might occur:

  1. SQLConnection declared within a shared class.
  2. SQLConnection stored in a session or application variable.
Ensuring that a new SQLConnection object is created for every page request when needed is the best way to prevent these errors from happening.




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