Re: Two table joins

Kumar S <ps_postgres@yahoo.com> writes:
> My wrong SQL statement:

> update experiment SET samp_id =3 WHERE (select
> exp_slot_name = 4264.dat WHERE exp_slot_id =
> exp_slot_name);

I think you want something like

update experiment SET samp_id = 3
WHERE exp_slot_id = (SELECT exp_slot_id FROM exp_slot_table
                     WHERE exp_slot_name = '4264.dat');

            regards, tom lane