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stored procedure that checks for foreign key constraint

Nice Narwhal answered on November 17, 2023 Popularity 2/10 Helpfulness 1/10

answer stored procedure that checks for foreign key constraint

stored procedure that checks for foreign key constraint

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----------------- Microsoft SQL Server -------------------
 --- A stored procedure that tests for a valid foreign key
CREATE PROC spInsertInvoice
							@VendorID int,
							@InvoiceNumber varchar(50),
							@InvoiceDate date,
							@InvoiceTotal money,
							@TermsID int,
							@InvoiceDueDate date
AS
	IF EXISTS(SELECT * FROM Vendors WHERE VendorID = @VendorID)
		INSERT Invoices
				VALUES (@VendorID, @InvoiceNumber,
						@InvoiceDate, @InvoiceTotal, 0, 0,
						@TermsID, @InvoiceDueDate, NULL
                        );
	ELSE
      --THROW [error_number, message, state]
		THROW 50001, 'Not a valid VendorID!', 1;
        
-- Calling Procedure -----------
-- A script that calls the procedure
BEGIN TRY
		EXEC spInsertInvoice
			799,'ZXK-799',’2020-03-01',299.95,1,’2020-04-01';
END TRY
BEGIN CATCH
		PRINT 'An error occurred.';
		PRINT 'Message: ' + CONVERT(varchar, ERROR_MESSAGE());
		IF ERROR_NUMBER() >= 50000
			PRINT 'This is a custom error message.';
END CATCH;

---- The response from the system --------
An error occurred.
Message: Not a valid VendorID!
This is a custom error message.

Popularity 2/10 Helpfulness 1/10 Language sql

Source: Grepper

Tags: key procedure sql

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Contributed on Nov 17 2023

Nice Narwhal

0 Answers Avg Quality 2/10

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