Re: casting tsrange to tstzrange doesn't seem to work? - Mailing list pgsql-general

From Joe Van Dyk
Subject Re: casting tsrange to tstzrange doesn't seem to work?
Date
Msg-id CACfv+pLNy=NSWa_KOGunyWgo8wvho4fhgQZLQ8W10kAP4Eawtw@mail.gmail.com
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In response to Re: casting tsrange to tstzrange doesn't seem to work?  (Jeff Davis <pgsql@j-davis.com>)
List pgsql-general


On Friday, July 5, 2013, Jeff Davis wrote:
On Tue, 2013-06-11 at 14:05 -0700, Joe Van Dyk wrote:
> # select tsrange(null)::tstzrange;
> ERROR:  cannot cast type tsrange to tstzrange
> LINE 1: select tsrange(null)::tstzrange;
>
I agree that there should be a cast between tsrange and tstzrange.

Unfortunately, this cant work generally for all range types, because the
total order might be different. For instance, we can't cast between a
textrange and int4range, because:

   ['09','1']

is a valid text range, but:

   [9,1]

is not.

Regards,
        Jeff Davis

Worth it to file a bug for this? 

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