Re: What language is faster, C or PL/PgSQL?

On Sat, Feb 2, 2013 at 11:36 AM, Carlo Stonebanks
<stonec.register@sympatico.ca> wrote:
> Here is an advantage Plpgsql has:
> http://www.postgresql.org/docs/9.1/static/plpgsql-expressions.html
>
> I guess you can offset this by creating your own prepared statements in C=
.
> Otherwise, I can=92t think of how C could be slower. I would choose C for
> functions that don=92t have SQL statements in them =96 e.g. math and stri=
ng
> processing.

For cases involving data processing (SPI calls), C can be slower
because pl/pgsql has a lot of optimizations in it that can be very
easy to miss.  I don't suggest writing backend C functions at all
unless you are trying to interface with a C library to access
functionality currently not exposed in SQL.

merlin