Re: Benchmarking partitioning triggers and rules

On 04/07/2015 07:49 PM, Tim Uckun wrote:

I understand that there is overhead involved in parsing the strings and
such.  The amount of overhead was surprising to me but that's another
matter.  What I am really puzzled about is the difference between the
statements

EXECUTE  'INSERT INTO ' ||  quote_ident(partition_name) ||  ' SELECT
($1).*' USING NEW ;

and

   EXECUTE  'INSERT INTO ' ||  quote_ident(partition_name) ||  ' VALUES
(($1).*)' USING NEW ;

Offhand I would say because in the first case you are doing a SELECT and in the second you are just doing a substitution.

They both do string interpolation but one is significantly faster than
the other.   Is there a third and even faster way?

I am using RDS so I can't really do stored procs in C.

--
Adrian Klaver
adrian.klaver@aklaver.com