Average Time Interval Between A Start And End Time
Looking to get the average time interval between a start and an end time (ex: Given the start and end times for runners in a race, find the average time it takes for a runner to complete the race)? Find exactly how to write this up in each flavor of SQL below!
Redshift
select avg(extract(epoch from endtime) - extract(epoch from starttime)) as avg_timePostgres
select avg(endtime - starttime) as avg_timeSQL Server
select cast(cast(avg(cast((endtime - starttime) as FLOAT) - floor(cast((endtime - starttime) as FLOAT))) as datetime) as time) as 'Avg Time'MySQL
select TIME(FROM_UNIXTIME(AVG(UNIX_TIMESTAMP(endtime) - UNIX_TIMESTAMP(starttime)))) AS AVG_TIMEBigQuery (Standard SQL)
Select TIME(TIMESTAMP_MILLIS(CAST(avg(DATETIME_DIFF(endtime,starttime,millisecond)) as INT64))) as avg_timeSQL Server solution inspired by this post
Updated 03-02-2023
