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An introduction to RAISERROR SQL Server

SQL Server-generated error messages can be hard to decipher at times. This can slow down the resolution process and also make it difficult to isolate the issue behind the error. Fortunately, this can be overcome by using SQL Server RAISERROR as an alternative to SQL Server error messages.

In other words, RAISERROR is a SQL Server error handling statement. It generates an error message and starts processing the error.

Furthermore, RAISERROR either builds a message dynamically or references either a user-defined message stored in the sys.messages catalog view. The message is then returned as a server error message to the calling application.

We can use the RAISERROR statement in these scenarios:

• Return messages that have variable text.
• Troubleshoot Transact-SQL code.
• Pushes the execution to jump from a TRY block to the corresponding CATCH block.
• Examine the values of data.
• Return error information from the CATCH block to the callers,

SQL RAISERROR Statement Syntax and Parameters

Here is the syntax of the SQL RAISERROR statement:

• message_text

  This is the message we want to display for the error. We can add custom messages to display the error information.
• message_id

  This is the id of the error message.  We can display a user-defined message, by defining it.
• severity

  This indicates the severity of the error. It can have a value between 0 and 25. The error severity values are:

  • • 19-25 – fatal errors
    • 11-18 – errors
    • 0-10 – Informational messages
• state

  This is the unique identification number that we can use to identify the code section behind the error.

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Conclusion

To sum up, our Support Engineers introduced us to RAISERROR in SQL Server. We also got a quick look at the SQL RAISERROR statement and its different parameters.