题目
第1题
A.alter table student add telephone varchar(10)
B.insert student into values (telephone char(10))
C.add table student alter column telephone varchar(10)
D.insert student telephone char(10 )
第3题
A.ALTER TABLE Student ADD Addr Char(20) ;
B.ALTER TABLE Student COLUMN ADD Addr Char(20) ;
C.ADD TABLE Student Addr Char(20) ;
D.ADD TABLE Student ALTER Addr Char(20);
第4题
第9题
A.Select * From Student where Sage=20
B.Select * From Student where Sage='20'
C.Select * From Student where Sage=【20】
D.Select * From Student where Sage EQUAL 20
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