From: | "Chris Hoover" <revoohc(at)gmail(dot)com> |
---|---|
To: | "Arturo Perez" <aperez(at)hayesinc(dot)com> |
Cc: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: [8.1.4] Create index on timestamp fails |
Date: | 2006-08-22 19:02:25 |
Message-ID: | 1d219a6f0608221202v7e05d14pdf61c29bc2b8756d@mail.gmail.com |
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Thread: | |
Lists: | pgsql-general |
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
>
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