Re: pgsql: Add pow(), aka power(), function to pgbench.

On Thu, Dec 28, 2017 at 7:47 AM, Robert Haas <rhaas@postgresql.org> wrote:
> Add pow(), aka power(), function to pgbench.
>
> Raúl Marín Rodríguez, reviewed by Fabien Coelho and Michael Paquier,
> with a minor fix by me.
>
> Discussion: http://postgr.es/m/CAM6_UM4XiA14y9HnDqu9kAAOtwMhHZxW--q_ZACZW9Hsrsf-tg@mail.gmail.com
>
> Branch
> ------
> master
>
> Details
> -------
> https://git.postgresql.org/pg/commitdiff/7a727c180aa3c3baba12957d4cbec7b022ba4be5
>
> Modified Files
> --------------
> doc/src/sgml/ref/pgbench.sgml                |  7 +++++++
> src/bin/pgbench/exprparse.y                  |  6 ++++++
> src/bin/pgbench/pgbench.c                    | 18 ++++++++++++++++++
> src/bin/pgbench/pgbench.h                    |  3 ++-
> src/bin/pgbench/t/001_pgbench_with_server.pl | 22 +++++++++++++++++++++-
> 5 files changed, 54 insertions(+), 2 deletions(-)

This seems to have caused a couple of BF failures on Windows (sorry
for my role in hiding those, I've just been reviewing all failures to
atone):

https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=jacana&dt=2017-12-28%2013%3A00%3A27
https://buildfarm.postgresql.org/cgi-bin/show_log.pl?nm=bowerbird&dt=2017-12-28%2011%3A30%3A23

Excerpts:

# debug(script=0,command=31): double 8.50705917302346e+037
#     doesn't match '(?^:command=31.: double 8.50705917302346e\+37\b)'

# debug(script=0,command=32): double 1e+030
#     doesn't match '(?^:command=32.: double 1e\+30\b)'

The difference seems to be a leading zero before the exponent, so
perhaps the patterns need "0*" in there?

--
Thomas Munro
http://www.enterprisedb.com