Question

CREATE MATERIALIZED VIEW ORDERS_MV
BUILD IMMEDIATE
REFRESH COMPLETE ON DEMAND AS
SELECT * FROM ORDERS;
---------------------------------------

CREATE OR REPLACE TRIGGER update_ship_receive
INSTEAD OF INSERT ON ORDERS_MV
FOR EACH ROW
BEGIN
  UPDATE ORDERS SET EXPECTED_SHIP_DATE = ORDER_DATE+5;
  UPDATE ORDERS SET EXPECTED_RECEIVE_DATE = SHIP_DATE+1 
WHERE SHIPPING_METHOD = '1 DAY';
  UPDATE ORDERS SET EXPECTED_RECEIVE_DATE = SHIP_DATE+2
 WHERE SHIPPING_METHOD = '2 DAY';
  UPDATE ORDERS SET EXPECTED_RECEIVE_DATE = SHIP_DATE+5 
WHERE SHIPPING_METHOD = 'GROUND';
END;
/

Answer 1

Oracle can see your table structures. We can’t. I’m betting Oracle sees the problem in your code.

It should point to the first line with the error. If not, select * from user_errors;

Maybe your ORDERS table doesn’t have SHIP_DATE (since the first statement talks about EXPECTED_SHIP_DATE).