On Thu, Jan 10, 2013 at 4:54 PM, Heikki Linnakangas
<hlinnakangas@vmware.com> wrote:
On 10.01.2013 20:45, Matheus de Oliveira wrote:
Inspired by Charles' thread and the work of Emmanuel [1], I have made some
experiments trying to create a trigger to make partitioning using C
language.
The first attempt was not good, I tried to use SPI [2] to create a query to
insert into the correct child table, but it took almost no improvement
compared with the PL/pgSQL code.
If you construct and plan the query on every invocation, it's not surprising that it's no different from PL/pgSQL performance.
Yeah. I thought about that, but the problem was that I assumed the INSERTs came with random date, so in the worst scenario I would have to keep the plans of all of the child partitions. Am I wrong?
But thinking better, even with hundreds of partitions, it wouldn't use to much memory/resource, would it?
In fact, I didn't give to much attention to SPI method, because the other one is where we can have more fun, =P.
Anyway, I'll change the code (maybe now), and see if it gets closer to the other method (that uses heap_insert), and will post back the results here.
Thanks,
--
Matheus de Oliveira
Analista de Banco de Dados
Dextra Sistemas - MPS.Br nível F!
www.dextra.com.br/postgres
