HELP IN DATABASE THIS DID NOT WORK CREATE OR REPLACE PROCEDURE PRC_INV_DELETE (W_IN IN NUMBER) ASBEGINIF W_IN IS NOT NULL THENDELETE FROM INVOICE WHERE INV_NUM = W_IN;END IF;END; Problem 30 Write a...

HELP IN DATABASE

THIS DID NOT WORK

CREATE OR REPLACE PROCEDURE PRC_INV_DELETE (W_IN IN NUMBER) AS
BEGIN
IF W_IN IS NOT NULL THEN
DELETE FROM INVOICE WHERE INV_NUM = W_IN;
END IF;
END;

Extracted text: Problem 30 Write a procedure to delete an invoice, giving the invoice number as a parameter. Name the procedure prc_inv_delete Test the procedure by deleting invoices 9000 and 9001 TASK


Extracted text: FIGURE P8.16 CH08_SIMPLECO DATABASE TABLES Database name: Ch08_SimpleCo Table name: CUSTOMER Table name: INVOICE CUST NUM CUST LNAME CUST FNAME CUST BALANCE INV NUM CUST_NUM INV DATE INV AMOUNT 1000 Smith Jeanne 1050.11 8000 1000 23-Mar-16 235.89 1001 Ortega Juan 840.92 8001 1001 23-Mar-16 312.82 8002 528.10 1001 30-Mar-16 1000 8003 12-Apr-16 194.78 8004 23-Apr-16 1000 619.44