This commit is contained in:
NoryiE
2025-02-10 06:00:28 +00:00
parent b0a4a6da9c
commit 71a1fce096
2428 changed files with 0 additions and 1005324 deletions

View File

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-- available online in file 'examp1'
DECLARE
qty_on_hand NUMBER(5);
BEGIN
SELECT quantity INTO qty_on_hand FROM inventory
WHERE product = 'TENNIS RACKET'
FOR UPDATE OF quantity;
IF qty_on_hand > 0 THEN -- check quantity
UPDATE inventory SET quantity = quantity - 1
WHERE product = 'TENNIS RACKET';
INSERT INTO purchase_record
VALUES ('Tennis racket purchased', SYSDATE);
ELSE
INSERT INTO purchase_record
VALUES ('Out of tennis rackets', SYSDATE);
END IF;
COMMIT;
END;
-- From https://docs.oracle.com/cd/B10500_01/appdev.920/a96624/01_oview.htm#7106