Re: fun fact about temp tables

Thank you for your answer.

But it`s temporary table so it`s equal to saying 'I don`t care about
this data' and I can get 'out of disk space' regardless of using
temporary tables.

What are we winning here?

On 08/05/2016 05:51 PM, Tom Lane wrote:
> Grigory Smolkin <g(dot)smolkin(at)postgrespro(dot)ru> writes:
>> I`ve noticed interesting aspect in temp tables working. It appears
>> postgres is trying to reserve space on disk for temp tables even before
>> temp_buffers overflow.
> Sure. Just like it reserves space for ordinary tables right away,
> long before there's any need to push the data out of shared_buffers.
> Otherwise, you might find yourself having to throw an "out of disk
> space" error after having already committed the relevant INSERTs.
>
> regards, tom lane

--
Grigory Smolkin
Postgres Professional: http://www.postgrespro.com
The Russian Postgres Company