PLS-00330: invalid use of type name or subtype name

Question

I am relatively new to Sql and am in the process of learning, so please bear with me. I am trying to create a trigger for the Invoices table that displays the vendor_name, invoice_number, and payment_total after the payment_total has been increased. I have discovered that I must use a compound trigger due to a mutating-table error and ended up with this:
CREATE OR REPLACE TRIGGER invoices_after_update_payment
FOR UPDATE OF payment_total
ON invoices
COMPOUND TRIGGER
  TYPE invoice_numbers_table      IS TABLE OF VARCHAR2(50);
  TYPE payment_totals_table       IS TABLE OF NUMBER;
  TYPE vendor_names_table         IS TABLE OF VARCHAR2(50);
  TYPE summary_payments_table     IS TABLE OF NUMBER INDEX BY VARCHAR2(50);
  TYPE summary_names_table        IS TABLE OF NUMBER INDEX BY VARCHAR2(50);
  invoice_numbers                 invoice_numbers_table;
  payment_totals                  payment_totals_table;
  vendor_names                    vendor_names_table;
  payment_summarys                summary_payments_table;
  name_summarys                   summary_names_table;
  AFTER STATEMENT IS
    invoice_number VARCHAR2(50);
    payment_total NUMBER;
    vendor_name VARCHAR2(50);
  BEGIN
    SELECT i.invoice_number, i.payment_total, v.vendor_name
    BULK COLLECT INTO invoice_numbers, payment_totals, vendor_names
    FROM invoices i JOIN vendors v
      ON i.vendor_id = v.vendor_id
    GROUP BY i.invoice_number;
    FOR i IN 1..invoice_numbers.COUNT() LOOP
      invoice_number := invoice_numbers(i);
      payment_total := payment_totals(i);
      vendor_name := vendor_names(i);
      summary_payments_table(invoice_number) := payment_total;
      summary_names_table(invoice_number) := vendor_name;
    END LOOP;
  END AFTER STATEMENT;
  AFTER EACH ROW IS
    temp_payment_total NUMBER;
    vendor_name VARCHAR2(50);
  BEGIN
    temp_payment_total := payment_summarys(:new.invoice_number);
    vendor_name := name_summarys(:new.invoice_number);
    IF (:new.payment_total > temp_payment_total) THEN
      DBMS_OUTPUT.PUT_LINE('Vendor Name: ' || vendor_name || ', Invoice Number: ' || :new.invoice_number || ', Payment Total: ' || :new.payment_total);
    END IF;
  END AFTER EACH ROW;
END;
/The code that I am using to update the table is:
UPDATE invoices
SET payment_total = 508
WHERE invoice_number = 'QP58872'At this point, I am getting an error report saying:
29/7           PLS-00330: invalid use of type name or subtype name
29/7           PL/SQL: Statement ignored
30/7           PLS-00330: invalid use of type name or subtype name
30/7           PL/SQL: Statement ignoredWhat does the error code entail? I have looked it up but can't seem to pin it. Any help would be greatly appreciated and I am open to any suggestions for improving my current code.
I am using Oracle Database 11g Express Edition on Windows 7. I am not sure if it is relevant, but I am also using Sql Developer. If you need any further information, I will do my best to provide what I can.
Thanks!
Edited by: 927811 on Apr 15, 2012 11:54 PM
Edited by: 927811 on Apr 15, 2012 11:56 PM

Answer 1

I took your advice and removed the exception handling. There is no point in it being there. I also checked the timing points and you are correct. So, I changed my AFTER STATEMENT to BEFORE STATEMENT, which I had been thinking about doing anyways. It just seemed logical to me. That brings me to where I am now. I ran my update again and got back this error, It is the same as the one before, but for a different line (?)
Error starting at line 1 in command:
UPDATE invoices
SET payment_total = 510
WHERE invoice_number = 'QP58872'
Error report:
SQL Error: ORA-06502: PL/SQL: numeric or value error: character to number conversion error
ORA-06512: at "AP.INVOICES_AFTER_UPDATE_PAYMENT", line 30
ORA-04088: error during execution of trigger 'AP.INVOICES_AFTER_UPDATE_PAYMENT'
06502. 00000 -  "PL/SQL: numeric or value error%s"
*Cause:   
*Action:Also, to make sure you are clear as to what my code now looks like:
SET SERVEROUTPUT ON;
CREATE OR REPLACE TRIGGER invoices_after_update_payment
FOR UPDATE OF payment_total
ON invoices
COMPOUND TRIGGER
  TYPE invoice_numbers_table      IS TABLE OF VARCHAR2(50);
  TYPE payment_totals_table       IS TABLE OF NUMBER;
  TYPE vendor_names_table         IS TABLE OF VARCHAR2(50);
  TYPE summary_payments_table     IS TABLE OF NUMBER INDEX BY VARCHAR2(50);
  TYPE summary_names_table        IS TABLE OF NUMBER INDEX BY VARCHAR2(50);
  invoice_numbers                 invoice_numbers_table;
  payment_totals                  payment_totals_table;
  vendor_names                    vendor_names_table;
  payment_summarys                summary_payments_table;
  name_summarys                   summary_names_table;
  BEFORE STATEMENT IS
    invoice_number VARCHAR2(50);
    payment_total NUMBER;
    vendor_name VARCHAR2(50);
  BEGIN
    SELECT i.invoice_number, i.payment_total, v.vendor_name
    BULK COLLECT INTO invoice_numbers, payment_totals, vendor_names
    FROM invoices i JOIN vendors v
      ON i.vendor_id = v.vendor_id
    GROUP BY i.invoice_number, i.payment_total, v.vendor_name;
    FOR i IN 1..invoice_numbers.COUNT() LOOP
      invoice_number := invoice_numbers(i);
      payment_total := payment_totals(i);
      vendor_name := vendor_names(i);
      payment_summarys(invoice_number) := payment_total;
      name_summarys(invoice_number) := vendor_name;
    END LOOP;
  END BEFORE STATEMENT;
  AFTER EACH ROW IS
    temp_payment_total NUMBER;
    vendor_name VARCHAR2(50);
  BEGIN
    temp_payment_total := payment_summarys(:new.invoice_number);
    vendor_name := name_summarys(:new.invoice_number);
    IF (:new.payment_total > temp_payment_total) THEN
      DBMS_OUTPUT.PUT_LINE('Vendor Name: ' || vendor_name || ', Invoice Number: ' || :new.invoice_number || ', Payment Total: ' || :new.payment_total);
    END IF;
  END AFTER EACH ROW;
END;
/Thanks for the help!