On Tue, 11 Sep 2001, Jason Tan wrote:
>
> On Mon, 10 Sep 2001, Francisco Reyes wrote:
>
> > Does PostgreSQL supports doing an insert with a subselect as it's value?
> > Something like:
> > insert into hearn_dates (date)
> > values ((select distinct merge_date from hearn));
> > The error I am getting is:
> > ERROR: More than one tuple returned by a subselect used as an expression.
>
> Presumably you slect distinct is returing more than one value/tuple.
>
> Run it by hand and see what it returns.
drf=# select distinct merge_date from hearn;
merge_date
------------
2000-11-17
2001-07-10
2001-09-07
(3 rows)
3 rows on 1 column.