not_null.txt

orale培训教材包括了所有的sql说明和实例

-- NOT NULL CONSTRAINT
ALTER TABLE plsql101_person MODIFY (first_name NOT NULL);
ALTER TABLE plsql101_person MODIFY (last_name NOT NULL);

INSERT INTO plsql101_person VALUES (
     'XL', 'Xaviera', NULL, '15-10月-03'
     )
;