Calcul de la moyenne d'une liste d'heures TIMESTAMP(6) WITH TIME ZONE

Utilisez le AVG fonction

SELECT avg(cast(lastprocesseddate as date)-cast(importeddate as date))
FROM feedqueueitems 
WHERE eventid = 2213283 
ORDER BY written DESC;

Sur la base de données avec le fuseau horaire +1 pour la date importée et la date du dernier traitement est UTC

SELECT avg(cast(cast(lastprocesseddate as timestamp with time zone) at time zone '+01:00' as date)-cast(importeddate as date))
FROM feedqueueitems 
WHERE eventid = 2213283 
ORDER BY written DESC;