The following lines contain the word 'select', 'insert', 'update' or 'delete':
PROCEDURE SELECT_SUMMARY (
P_HEADER_ID IN OUT NUMBER,
P_TOTAL IN OUT NUMBER,
P_TOTAL_RTOT_DB IN OUT NUMBER ) IS
BEGIN
SELECT NVL(SUM(L.SELLING_PRICE *
(NVL(ORDERED_QUANTITY, 0)
- NVL(L.CANCELLED_QUANTITY,0))), 0)
INTO P_TOTAL
FROM SO_LINES L
WHERE L.HEADER_ID = P_HEADER_ID;