Retrieve the week number corresponding to a specific date.
| SELECT WEEKOFYEAR(“2017-06-15”); | 
The WEEKOFYEAR() function returns the week number (from 1 to 53) for a specified date.
Note: Assuming Monday is the first day of the week and the first week of the year has more than 3 days.
Tip: Also consider using the WEEK() function.
| WEEKOFYEAR(date) | 
| 
 Parameter  | 
 Description  | 
| 
 date  | 
 Required: The date or datetime from which to extract the week number.  | 
| 
 Works in:  | 
 From MySQL version 4.0  | 
Retrieve the week number corresponding to a specific date.
| SELECT WEEKOFYEAR(“2017-01-01”); | 
Retrieve the week number for the current date according to the system’s configuration.
| SELECT WEEKOFYEAR(CURDATE()); |