sql - oracle中如何添加检查约束

Question

我有一张桌子，

create table a(
id_a number(5) not null, 
name varchar2(15) not null, 
address varchar2(30), 
phone varchar2(15), 
constraint pk_a primary key (id_a)
);

我想在电话上添加约束检查。例子。电话是08175210868

我只想输入 +628175210868

对不起我的英语不好。

Answer 1

尝试添加行级触发器

CREATE OR REPLACE TRIGGER VALIDATE_PHONE 
BEFORE INSERT OR UPDATE OF PHONE ON A 
REFERENCING OLD AS OLD NEW AS NEW 
FOR EACH ROW 
DECLARE
    ex_phone       EXCEPTION;
BEGIN
  IF :NEW.PHONE not like '+62%' THEN raise ex_phone; END IF;
END;

Answer 2

你可以试试下面的

alter table b add constraint phone check (phone like '+62%');