Since i am new bee for programming. I have some problem in writing mysql query to update the date in my table. Please help me sort out.
I have 2 date fields in my table 'start_date' and 'end_date' . In the table i have 500 old records. But now i need to update the end_date form 3weeks of 'start_date'. All the old records have the 'start_date'.