Rui Miguel Feio

For the sake of this example, let’s assume that:

1. we want to work with records older then 60 days
2. the table name is ‘table’ (how original!)
3. the table field with dates is called date_field

DELETE FROM table WHERE date_field < DATE_SUB(CURDATE(),INTERVAL 60 DAY)

This MySQL command deletes all table rows whose date is older then 60 days from current date – CURDATE() -.

SELECT something FROM table WHERE date_field< DATE_SUB(CURDATE(),INTERVAL 60 DAY)

This MySQL command selects all table rows whose date is older then 60 days from current date – CURDATE() -.

Explanation:

DATE_SUB(date,INTERVAL expr unit) -> Subtracts two dates

CURDATE() -> Returns the current date

unit can be:

• MICROSECOND
• SECOND
• MINUTE
• HOUR
• DAY
• WEEK
• MONTH
• QUARTER
• YEAR
• SECOND_MICROSECOND
• MINUTE_MICROSECOND
• MINUTE_SECOND
• HOUR_MICROSECOND
• HOUR_SECOND
• HOUR_MINUTE
• DAY_MICROSECOND
• DAY_SECOND
• DAY_MINUTE
• DAY_HOUR
• YEAR_MONTH