Re: hstore: null value is treated as empty string by avals function

On Mon, Sep 27, 2010 at 2:36 PM, Alexey Bashtanov <bashtanov(at)nasvete(dot)ru> wrote:
> hstore: null value is treated as empty string by avals function
>
> # select avals('gfds'=>null) = array[null], avals('gfds'=>null) =
> array[''], version();
>  ?column? | ?column? |
>    version
> ----------+----------+------------------------------------------------------------------------------------------------------------------
>  f        | t        | PostgreSQL 8.4.4 on x86_64-redhat-linux-gnu,
> compiled by GCC gcc (GCC) 4.1.2 20080704 (Red Hat 4.1.2-46), 64-bit
> (1 row)
>
> got f,t
> expected t,f
> hope the problem is clear

I found 9.0 and 9.1dev returns t,f as expected.
Is it an incompatibility between 8.4 and 9.0?

--
Itagaki Takahiro