Re: Partition insert trigger using C language

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.

The right way to do this with SPI is to prepare each insert-statement on
first invocation (SPI_prepare + SPI_keepplan), and reuse the plan after
that (SPI_execute_with_args).

If you construct and plan the query on every invocation, it's not
surprising that it's no different from PL/pgSQL performance.

- Heikki