Re: Postgres do not support tinyint?

Igor Korot писал(а) 2025-01-09 02:40:
> Hi, Christopphe,
>
> On Wed, Jan 8, 2025 at 1:34 PM Christophe Pettus <xof(at)thebuild(dot)com>
> wrote:
>>
>>
>>
>> > On Jan 8, 2025, at 11:30, Igor Korot <ikorot01(at)gmail(dot)com> wrote:
>> > There is no boolean - it is 0-4 inclusive.
>>
>> Unless you have somehow gotten PostgreSQL running on an IBM 7070, the
>> range 0-4 can be represented by three binary digits, aka booleans. :-)
>
> The only booleans I know of are 0 and 1. ;-)
>
>>
>> To be serious, though, the situation is:
>>
>> 1. If there are just one or two tinyints, having a tinyint type
>> wouldn't save any space in the row.
>
> No it is not a lot of them.
> So then "smallint" is the best bet, right?
>
> Thank you
>
>> 2. If there are a lot of them, it's worth encoding them into a
>> bitstring.

Hi!
If you really need 1-byte integer, you can use "char" type. Cast it
to/from int.
See comment at the end of the page
https://www.postgresql.org/docs/17/datatype-character.html

--
Best regards,

Vladlen Popolitov.