SQL基本语句
摘要:一、表 1.创建表 CREATE TABLE haha(name CHAR(10) NOT NULL, number CHAR(20) NOT UNIQUE, city CHAR(10) PRIMARY KEY(number) FOREIGN KEY(city) REFERENCE hehe(cit
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posted @ 2017-08-22 17:26
posted @ 2017-08-22 17:26
posted @ 2017-08-21 21:28