So, say I have something like this - the actual example is something a
bit more useful:
CREATE TABLE foo (a integer, b integer);
INSERT INTO foo VALUES (1, 1); -- must have some data to generate the failure
CREATE FUNCTION bar (foo) RETURNS SETOF foo AS $$
DECLARE
f foo;
BEGIN
f.a := 1;
RETURN NEXT f;
f.a := 2;
RETURN NEXT f;
END
$$ LANGUAGE plpgsql;
I can't find any legal way of calling this function.
SELECT bar(f) FROM foo f;
ERROR: set-valued function called in context that cannot accept a set
SELECT * FROM foo f, bar(f);
ERROR: function expression in FROM may not refer to other relations
of same query level
Any help appreciated.
Thanks,
...Robert
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