Is this purely an intellectual exercise or is there a reason you don't just subtract the right number of days from your start date to get the beginning of the week?
It is required to be able to run a report which is querying a mysql database for records of a particular week.
Not a problem if the report is run on say a Monday it would return the required info but if say it was run on a Wednesday it would contain part of the current week and part of the following week using mysql's interval week.
EG: xxxxx AND `s_date` >= DATE_SUB( CURDATE( ) , INTERVAL 8 WEEK )
AND `s_date` < DATE_SUB( CURDATE( ) , INTERVAL 7 WEEK )
So I need to replace CURDATE( ) with the date of the Sunday of the week the report is being run preferably in the format YYYY-MM-DD
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