Re: [8.1.4] Create index on timestamp fails

It appears that 8.1 is stricter on checking the type of function. Look at
your user_tracking function. It is probably set as volatile. You need to
change it to be immutable.

This should fix the issue.

Chris

On 8/21/06, Arturo Perez <aperez(at)hayesinc(dot)com> wrote:
>
> Hi all,
>
> Using postgresql 8.1.4....
>
> I have a table with an column:
> entry_date | timestamp with time zone| not null
>
> And when I try to create an index on it like so:
> create index entry_date_idx on
> user_tracking(date_part('year',entry_date));
>
> I get a
> ERROR: functions in index expression must be marked IMMUTABLE
>
> According to the mailing lists, this has been working since 7.4. What am
> I doing wrong?
>
> tia,
> arturo
>