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.
Este exercício faz parte do curso
Transactions and Error Handling in SQL Server
Instruções do exercício
- Surround the operation with a
TRYblock. - Surround the functions with a
CATCHblock. - Select the error information.
Exercício interativo prático
Experimente este exercício completando este código de exemplo.
-- 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;
___ ___