Sorry, I forgot part of my question in the previous message: How do you return a "setof" value from a PG/Tcl procedure?
Returninga list does not seem to work ...
### PREVIOUS MESSAGE WAS ...
Consider create function followers(text) returns setof text as 'select id from ids where id > $1 '
language'sql';
The function seems to work OK: select followers('h');
does return all indexes after the index 'h'.
On the other hand, select * from ids where id in (select followers('h'));
produces the message ERROR: An operand to the '=' operator returns a set of text, but '=' takes single values,
notsets.
Apparently the phrase select followers('h');
returns a set with members which are 'setof text'. psql has no trouble
displaying all rows, but the parser does ...
So, my question is: can I produce a set in a function so that it
mimicks perfectly the return set of a select query?
I am using PG 6.5.3; is this already solved in the 7.0 beta?
Thanks
Miguel Sofer
