Logging into table in SQL Server trigger

Question

I am coding SQL Server 2005 trigger. I want to make some logging during trigger execution, using INSERT statement into my log table. When there occurs error during execution

Answer 1

Another possible option is to use a table variable to capture the info you want to store in your permanent log table. Table variables are not rolled back if a ROLLBACK TRANSACTION command is given. Sample code is below...

--- Declare table variable
DECLARE @ErrorTable TABLE
  ( [DATE]  smalldatetime,
    [ENTRY] varchar(64) )

DECLARE @nErrorVar  int

--- Open Transaction
BEGIN TRANSACTION

--- Pretend to cause an error and catch the error code
SET @nErrorVar = 1  --- @@ERROR

IF (@nErrorVar = 1)
  BEGIN

    --- Insert error info table variable
    INSERT INTO @ErrorTable 
      ( [Date], [Entry] )
    SELECT
        getdate(), 'Error Message Goes Here'

    RAISERROR('Error Message Goes Here', 16, 1)

    ROLLBACK TRANSACTION

    --- Change this to actually insert into your permanent log table
    SELECT  *
    FROM    @ErrorTable

  END

IF @@TRANCOUNT  0
  PRINT 'Open Transactions Exist'
ELSE
  PRINT 'No Open Transactions'