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SQL code:
create table student (sid varchar(10),sname varchar(10),sage varchar(10),ssex varchar(10))
create table Sc (sid varchar(10),cid varchar(10),score int)
insert into sc select '0001','001',80
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select a.uid,a.fid,b.* from a,b where a.uid=b.id and a.fid=b.id
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