How to get sql error in stored procedure

Question

I\'m using SQL Server 2005. I created a stored procedure which works most of the time, but I found an instance of where it doesn\'t do what I want.

Currently, the c

Answer 1

Here's part of a stored procedure template I use:

/*  CREATE PROCEDURE...  */

DECLARE
  @ErrorMessage   varchar(2000)
 ,@ErrorSeverity  tinyint
 ,@ErrorState     tinyint

/*  Additional code  */

BEGIN TRY

/*  Your code here  */

END TRY

BEGIN CATCH
    SET @ErrorMessage  = ERROR_MESSAGE()
    SET @ErrorSeverity = ERROR_SEVERITY()
    SET @ErrorState    = ERROR_STATE()
    RAISERROR(@ErrorMessage, @ErrorSeverity, @ErrorState)

    BREAK
END CATCH

/*  Further cleanup code  */

Try/Catch blocks can be tricky but are much more thorough than @@error. More importantly, you can use the various error_xxx() functions within them. Here, I store the proper error message in variable @ErrorMessage, along with enough other data to re-raise the error. From here, any number of options are available; you could make @ErrorMessage an output variable, test for and handle specific errors, or build your own error messages (or adjust the existing ones to be clearer--you may get irritated finding out how often you'll want to do that). Other options will present themsleves.

Something to look out for: in some situations, SQL will throw two error messages back to back... and error_message() will only catch the last one, which usually says something like "attempt to create object failed", with the real error given in the first error message. This is where building your own error message comes in.