How Can I Effectively Halt SQL Server Script Execution During Validation or Lookup Processes?

Strategies for Interrupting SQL Server Script Execution

Stopping a SQL Server script mid-execution is often necessary, particularly during validation or data lookup operations. Here are effective methods to achieve this:

1. The raiserror Approach:

The raiserror statement offers a powerful way to halt script execution. Using the following syntax:

raiserror('Critical error encountered', 20, -1) with log

Setting the severity level to 20 (or higher) and including WITH LOG will terminate the script and record the error in the SQL Server log.

2. Leveraging the noexec Option:

This method works in conjunction with GO statements. Setting noexec on prevents subsequent commands from executing. Remember to turn noexec off before resuming execution.

Illustrative Example Combining Both Methods:

print 'Starting script execution...'
go

print 'Fatal error detected, script will terminate!'
-- Method 1: Raiserror
raiserror('Critical error encountered', 20, -1) with log

-- Method 2: Noexec
set noexec on

print 'This message will not be printed.'
go

-- Re-enable execution (necessary in SSMS for script re-run)
set noexec off

Important Considerations:

• raiserror necessitates administrator privileges and closes the database connection.
• noexec doesn't close the connection but requires explicitly re-enabling execution.
• When running from sqlcmd.exe, a 2745 exit code indicates script termination.

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