Marc G. Fournier wrote:
'k, this doesn't look right, but it could be that I'm overlooking
something ...
The function I created:
CREATE FUNCTION month_trunc (timestamp without time zone) RETURNS timestamp without
time zone
AS 'SELECT date_trunc(''month'', $1 )'
LANGUAGE sql IMMUTABLE;
The query that fails:
ams=# select * from traffic_logs where month_trunc(runtime) = month_trunc(now());
ERROR: Function month_trunc(timestamp with time zone) does not exist
Unable to identify a function that satisfies the given argument types
You may need to add explicit typecasts
now return a timestamp with time zone and your function
take a timestamp without time zone.
^^^^^^^
Regards
Gaetano Mendola
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