Passing composite types to plpgsql functions

"Jeff Waugh" <jaw@ic.net> writes:

/doc/html/plpgsql-description.html states that:
"Parameters to a function can be composite types (complete table rows). In
that case, the corresponding identifier $n will be a rowtype, but it must be
aliased using the ALIAS command described above."

That's out of date as of 7.1 --- you can alias a rowtype parameter,
but you don't have to.

What syntax do I need in my function declaration to receive a parameter of
something%ROWTYPE ?

You use the table name as a datatype. Trivial example:

regression=# create table foo(f1 int, f2 int);
CREATE
regression=# insert into foo values (1,2);
INSERT 723473 1
regression=# insert into foo values (7,11);
INSERT 723474 1
regression=# create function foosum(foo) returns int as
regression-# 'begin
regression'# return $1.f1 + $1.f2;
regression'# end;' language 'plpgsql';
CREATE
regression=# select *,foosum(f) from foo f;
f1 | f2 | foosum
----+----+--------
1 | 2 | 3
7 | 11 | 18
(2 rows)

regards, tom lane