Documentation errors in Programmers guide, chapter 4.

Looks like this has been fixed. Can you check the development
documentation on the web site.

The following more interesting example takes a single argument of type EMP, and retrieves multiple results:

select function hobbies (EMP) returns set of HOBBIES
as 'select (HOBBIES.all) from HOBBIES
where $1.name = HOBBIES.person'
language 'sql';

Should be:

create function hobbies (EMP) returns setof HOBBIES ...

It took me quite a while to figure out the second error, since "set of"
seemed perfectly natural there, when in fact it is "setof".

Thanks,

--Dan

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