Fórum AJUDA_DBGRID #479297

procedure Tform1.DBGrid1TitleClick(Column: TColumn);
var
    coluna:string;
begin
    coluna:=column.FieldName; // PEGA O CAMPO DA COLUNA CLICADA
    ibquery1.Close;
    ibquery1.SQL.Clear;
    ibquery1.SQL.Add('select * from clientes order by coluna');
    ibquery1.Open;
end;