SQL基础教程（第2版）练习题 第一章

CREATE TABLE Addressbook
 (
   regist_no    INTEGER      NOT NULL,
   name        VARCHAR(128) NOT NULL,
   address       VARCHAR(256) NOT NULL,
   tel_no       CHAR(10)     ,
   mail_address CHAR(20)     ,
   PRIMARY KEY (regist_no));

View Code

-- [PostgreSQL] [MySQL]
ALTER TABLE Addressbook ADD COLUMN postal_code CHAR(8) NOT NULL;


-- [Oracle]
ALTER TABLE Addressbook ADD (postal_code CHAR(8)) NOT NULL;

View Code

 

=========================================

end

标签：练习题,code,no,Addressbook,CHAR,基础教程,SQL,TABLE,NULL
来源： https://www.cnblogs.com/MarlonKang/p/12219691.html