Question: PL/SQL write an anonymous block program unit that takes as user-input vendor_id and prints the average invoice_total for that specific vendor_id. The program raises an

PL/SQL

write an anonymous block program unit that takes as user-input vendor_id and prints the average invoice_total for that specific vendor_id. The program raises an exception if the average invoice_total for that vendor_id is greater than or equal 1900 and print the message 'High Invoice_due'

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