JOIN Record returning Function

Daniel Schuchardt <d.schuchardt@prodat-sql.de> wrote:

i have a function that returns a record.

myfunc(IN id INTEGER) RETURNS RECORD.

in that function the record is build from some subquery's in
dependence of data.

Now i need to join that function to its correponding main
table that holds the id.

SELECT myfunc.* FROM maintable JOIN myfunc(maintable.pk) ON
true WHERE maintable.field=statisticdata;

ERROR: invalid reference to FROM-clause entry for table "maintable"
TIP: There is an entry for table "maintable", but it cannot
be referenced from this part of the query.

so far so good, thats clear. But does anyone know a tricky
solution for that problem?

"SELECT myfunc(pk) FROM maintable WHERE field =
statisticdata;"?

Tim