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procedure TForm1.Button2Click(Sender: TObject);
var
name:String ;
begin
   name := edit2.Text ;
   name := '%' + name ;
   query1.Close ;
   query1.SQL.Clear ;
   query1.SQL.Add('select * from gjh_t where name like '''+name+'''') ;
   query1.Open ;
  
end;
select * from gjh_t where name like '+name+'
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select * from gjh_t where name like '''+name+''')


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