Re: [RFC] new digest datatypes, or generic fixed-len hex types?

Merlin Moncure wrote:
> On Mon, Jul 27, 2009 at 10:20 AM, Tom Lane<tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
>
>> Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
>>
>>> We've developed some code to implement fixed-length datatypes for well
>>> known digest function output (MD5, SHA1 and the various SHA2 types).
>>> These types have minimal overhead and are quite complete, including
>>> btree and hash opclasses.
>>>
>>> We're wondering about proposing them for inclusion in pgcrypto.
>>>
>> Wasn't this proposed and rejected before? (Or more to the point,
>> why'd you bother? The advantage over bytea seems negligible.)
>>
>
> well, one nice things about the fixed length types is that you can
> keep your table from needing a toast table when you have a bytea in
> it.
>
>
>

Can't you just set storage on the column to MAIN to stop it being stored
in a toast table?

cheers

andrew