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using mysql
2 dates: start_date and end_date.
After altering the
TIMEDIFF(start_date, end_date) AS time_diff
I want to SUM() all time_diff so I try this
SUM(TIMEDIFF(start_date, end_date)) AS time_diff
this returning something I don’t expect to.
What am I doing wrong?
EDIT:
SEC_TO_TIME(SUM(TIME_TO_SEC(TIMEDIFF(end_date, START_DATE)))) AS time_diff
works perfect
SEC_TO_TIME(SUM(TIME_TO_SEC(TIMEDIFF(end_date, START_DATE)))) AS time_diff