简单的sql语句

【文件属性】：

文件名称：简单的sql语句

文件大小：324B

文件格式：TXT

更新时间：2018-09-29 05:38:42

sql

create table CUSTOMERS ( ID bigint not null, NAME varchar(50), primary key (ID) ); create table ORDERS ( ID bigint not null, ORDER_NUMBER varchar(15), CUSTOMER_ID bigint not null, primary key (ID) ); create table categories( ID biging not null, NAME varchar(15), CATEGORY_ID bigint, primary key (ID) );