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    select sid1,sid2 from student where sname='zhang'

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C# code:

sudent query = from s in DC.student
where s.sname = "zhang"
select s};
int sid1 = query.sid1;
int sid2 = query.sid2;



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C# code
sudent query=from sin DC.studentwhere s.sname="zhang"select s};int sid1= query.sid1;int sid2= query.sid2;


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