Using error functions

For every month, you want to know the total amount of money you earned in your bike store. Instead of reviewing every order line, you thought it would be better to prepare a script that computes it and displays the results.

While writing the script, you made a mistake. As you can see, the operation 'Total: ' + SUM(price * quantity) AS total is missing a cast conversion, causing an error.

How can we catch this error? Show the error number, severity, state, line, and message.

Deze oefening maakt deel uit van de cursus

Transactions and Error Handling in SQL Server

Cursus bekijken

Oefeninstructies

Surround the operation with a TRY block.
Surround the functions with a CATCH block.
Select the error information.

Praktische interactieve oefening

Probeer deze oefening eens door deze voorbeeldcode in te vullen.

-- Set up the TRY block
___ ___  	
	SELECT 'Total: ' + SUM(price * quantity) AS total
	FROM orders  
___ ___
-- Set up the CATCH block
___ ___  
	-- Show error information.
	SELECT  ___ AS number,  
        	___ AS severity_level,  
        	___ AS state,
        	___ AS line,  
        	___ AS message; 	
___ ___

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