> > create cursor Cliente ; > ( clicod I, ; > clinom c(20) ; > ) > index on clicod tag Id > > insert into Cliente values (1, 'Carlos') > insert into Cliente values (2, 'Claudio') > > create cursor Cabeza ; > ( cab_id I, ; > clicod I ; > ) > index on cab_id tag Cab_id > index on clicod tag clicod > > insert into cabeza values (1, 1) > > && no da nada, problema en vfp6 > select cli.clicod as Cliente, ; > cli.clinom as Nombre, ; > cb.clicod as cb_clicod ; > from Cliente cli ; > left join Cabeza cb on (cb.clicod = cli.clicod) ; > into cursor Nada ; > where ( isnull(cb.clicod) ) > > && eso OK in vfp6 > select cli.clicod as Cliente, ; > cli.clinom as Nombre, ; > cb.clicod as cb_clicod ; > from Cliente cli ; > left join Cabeza cb on (cb.clicod = cli.clicod) ; > into cursor OK ; > having ( cb_clicod is null ) > > select Nada > brow nowait > > select OK > brow nowait >