I am new to MYSQL and i am a salesforce developer.
How to calculate difference between two timings in minutes in MYSQL.
(L1_Finish_TimeStamp__c - L1_Start_TimeStamp__c)
As far as I assume
L1_Start_TimeStamp__c contains timestamps in format like
2017-08-16 09:29:21, hence we have convert it into
unix timestamp which is integer value and contains seconds so we have divide difference to 60.