Alvaro Herrera wrote:
> Christian Paul B. Cosinas wrote:
>
>> Does Creating Temporary table in a function and NOT dropping them affects
>> the performance of the database?
>>
>
> The system will drop it automatically, so it shouldn't affect.
>
> What _could_ be affecting you if you execute that function a lot, is
> accumulated bloat in pg_class, pg_attribute, or other system catalogs.
> You may want to make sure these are vacuumed often.
>
>
The answer in my experience is a very loud YES YES YES
If you use lots of temporary tables you will grow and dirty your system
catalogs, so you need to be vacuuming them regularly also (pg_call,
pg_attribute) Otherwise your db will slow to a crawl after a while.
Ralph