drop_constraint.txt

orale培训教材包括了所有的sql说明和实例

INSERT INTO plsql101_product VALUES (
     'Blue Snaphoo', 1.95, 10, '30-12月-01')
;

ALTER TABLE plsql101_product DROP CONSTRAINT reasonable_stock_date;

INSERT INTO plsql101_product VALUES (
     'Blue Snaphoo', 1.95, 10, '30-12月-01')
;