Seems clearly your mistake to me... you do realize that (null + z) is
always going to be null, right? Maybe your totals columns should have
been declared NOT NULL (and presumably DEFAULT 0) to avoid this
problem?
Adding some diagnostics to your function (and fixing all the syntax
errors) and running it shows that you're frequently trying to add to
nulls, e.g.:
NOTICE: sum_pkt_in_int = <NULL>
NOTICE: sum_orig_raw_pktcount = 4
NOTICE: sum_pkt_in_int = <NULL>
NOTICE: sum_orig_raw_pktcount = 599
these diagnostics were obtained as follows:
CREATE OR REPLACE FUNCTION statistics.notice(text, anyelement)
RETURNS anyelement
LANGUAGE plpgsql
AS $function$ begin raise notice '% = %', $1, $2; return $2; end; $function$
and changing your update to:
sum_pkt_in_int = notice(''sum_pkt_in_int'',sum_pkt_in_int)
+ notice(''sum_orig_raw_pktcount'',sum_orig_raw_pktcount),
-- XXX THIS IS IT, does not work even when ... + 1000000 XXX
(doing \set VERBOSITY terse in psql is a good idea for this case to
avoid excessive CONTEXT output)
--
Andrew (irc:RhodiumToad)
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