On ons, 2011-01-12 at 13:52 +0900, Itagaki Takahiro wrote:
> I added a short description about MULTISET and example of operators
> in "Arrays > 8.14.7. Multiset Support" section in the docs.
> Is it enough? or what kind of information do you want?
>
> Separate patches for src and doc attached. It includes a few bug fixes
> and cleanup. I changed the error code in trim_array() to
> ERRCODE_ARRAY_ELEMENT_ERROR according to the spec.
>
You may want to read this thread about the cardinality function are you
trying to add:
http://archives.postgresql.org/pgsql-hackers/2009-02/msg01388.php
Also, what happened to the idea of a separate MULTISET type?
