Re: subselects

Bruce wrote:
> I have completed adding Var.varlevelsup, and have added code to the
> parser to properly set the field. It will allow correlated references
> in the WHERE clause, but not in the target list.

select i2.ip1, i1.ip4 from nameip i1 where ip1 = (select ip1 from nameip
i2);
522: Table (i2) not selected in query.
select i1.ip4 from nameip i1 where ip1 = (select i1.ip1 from nameip i2);
284: A subquery has returned not exactly one row.
select i1.ip4 from nameip i1 where ip1 = (select i1.ip1 from nameip i2
where name='zeus');
2 row(s) retrieved.

Informix allows correlated references in the target list. It also allows
subselects in the target list as in:
select i1.ip4, (select i1.ip1 from nameip i2) from nameip i1;
284: A subquery has returned not exactly one row.
select i1.ip4, (select i1.ip1 from nameip i2 where name='zeus') from
nameip i1;
2 row(s) retrieved.

Is this what you were looking for ?

Andreas