On Sat, May  4, 2013 at 01:17:44PM -0400, Bruce Momjian wrote:
> Yes, I see it is wrong now. I came up with this new query:
> 
>       SELECT to_hex(EXTRACT(EPOCH FROM backend_start)::integer) || '.' ||
>              regexp_replace('0000' || to_hex(pid), '^0*(.*....)$', '\1')
>       FROM pg_stat_activity;
> 
> It removes some leading zeros, but guarantees 4 digits.
> 
> I have updated to that new query to our docs too.  Is there a better
> regex for this?

OK, I thought of a better one:

        SELECT to_hex(EXTRACT(EPOCH FROM backend_start)::integer) || '.' ||
               regexp_replace('0000' || '0133e3', '^0*(.{4,})$', '\1')
        FROM pg_stat_activity;

-- 
  Bruce Momjian  <br...@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + It's impossible for everything to be true. +


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