摘要: SQL语句 CREATE TABLE loctionall ( country VARCHAR(40) , provice VARCHAR(40) , city VARCHAR(40) , CONSTRAINT PK_loctionall PRIMARY KEY (country, provice, 阅读全文
posted @ 2019-11-12 14:25 后跳 阅读(346) 评论(0) 推荐(0) 编辑