I’m trying to get the AVG time, but the time format is not supported by the AVG function. I tried with CAST function, like in some posts were explained, but it seems doesn’t work anyway. Thanks
WITH october_fall AS
(SELECT
start_station_name,
end_station_name,
start_station_id,
end_station_id,
EXTRACT (DATE FROM started_at) AS start_date,
EXTRACT(DAYOFWEEK FROM started_at) AS start_week_date,
EXTRACT (TIME FROM started_at) AS start_time,
EXTRACT (DATE FROM ended_at) AS end_date,
EXTRACT(DAYOFWEEK FROM ended_at) AS end_week_date,
EXTRACT (TIME FROM ended_at) AS end_time,
DATETIME_DIFF (ended_at,started_at, MINUTE) AS total_lenght,
member_casual
FROM
`ciclystic.cyclistic_seasonal_analysis.fall_202010` AS fall_analysis
ORDER BY
started_at DESC)
SELECT
COUNT (start_week_date) AS avg_start_1,
AVG (start_time) AS avg_start_time_1, ## here is where the problem start
member_casual
FROM
october_fall
WHERE
start_week_date = 1
GROUP BY
member_casual