摘要：
use shiyangocreate table Student(Sno char(9) not null,Sname char(20) not null,Sex char(2) null,Sage smallint null,Sdept char(20) null,primary key (Sno 阅读全文
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摘要：
use shiyangocreate table Student(Sno char(9) not null,Sname char(20) not null,Sex char(2) null,Sage smallint null,Sdept char(20) null,primary key (Sno 阅读全文
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