sql 표 (datatable)

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use stuDB
go
if exists (select * from sysobjects where name='stuInfo')
 drop table stuInfo
go
create table stuInfo
(
 stuName varchar(20) not null,
 stuNo char(6) not null,
 stuAge int not null,
 stuID numeric(18,0),
 stuSeat smallint identity(1,1),
 stuAddress text
)
go
if exists (select * from sysobjects where name='stuMarks')
 drop table stuMarks
go
create table stuMarks
(
 examNo char(7) not null,
 stuNo char(6) not null,
 writtenExam int not null,
 labExam int not null
)
go
insert into stuInfo (stuName,stuNo,stuAge,stuID,stuAddress) values('  ','2',16,18,'  ')
insert into stuInfo (stuName,stuNo,stuAge,stuID,stuAddress) values('  ','3',15,19,'  ')
insert into stuInfo (stuName,stuNo,stuAge,stuID,stuAddress) values('  ','4',16,20,'  ')
insert into stuInfo (stuName,stuNo,stuAge,stuID) values('  ','5',16,21)