Re: R: Very slow bytea data extraction - Mailing list pgsql-performance

msmbarabino@virgilio.it wrote:
> Thanks for your reply,
>
>
>> Is it in executing the query (what does
> EXPLAIN ANALYSE show)?
>
> Here is the output of explain analyze SELECT *
> FROM "FILE"
>
> "Seq Scan on "FILE"  (cost=0.00..1.36 rows=36 width=235)
> (actual time=0.023..0.107 rows=36 loops=1)"

If you look at the "actual time" it's completing very quickly indeed. So
- it must be something to do with either:
1. Fetching/formatting the data
2. Transferring the data to the client.

What happens if you only select half the rows? Does the time to run the
select halve?

--
   Richard Huxton
   Archonet Ltd