Question

I have two fields, one with the purchase date and one with the lifespan of an item. I am wondering if there is any way to determine if the current date is past the lifespan. So, pretty much if MySQL could test if current_date is > purchase_date + lifespan.

The purchase date is a date formated yyyy-mm-dd and lifespan is an integer of months. Is there any way to perform this calculation?

Answer 1

You might try:

SELECT * FROM table WHERE NOW() > (purchase_date + INTERVAL lifespan MONTH)

But you might use

SELECT * FROM table WHERE NOW() > date_add(purchase_date, INTERVAL lifespan MONTH)

Or DATEDIFF

SELECT * FROM table WHERE DATEDIFF(NOW(), purchase_date) / 30 < lifespan