Zprůměrování seznamu TIMESTAMP(6) S TIME ZONE časy

Použijte AVG funkce

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

V databázi s časovým pásmem +1 pro importeddate a lastprocesseddate je 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;