I have a table in MySQL. What would be the sql statement look like to add say 2 days to the current date value in the table?
UPDATE classes SET date = date + 1 where id = 161
this adds one second to the value, i don’t want to update the time, i want to add two days?
Assuming your field is a
date type (or similar):
SELECT DATE_ADD(`your_field_name`, INTERVAL 2 DAY) FROM `table_name`;
With the example you’ve provided it could look like this:
UPDATE classes SET `date` = DATE_ADD(`date` , INTERVAL 2 DAY) WHERE `id` = 161;
UPDATE table SET nameofdatefield = ADDDATE(nameofdatefield, 2) WHERE ...
This query stands good for fetching the values between current date and its next 3 dates
SELECT * FROM tableName WHERE columName BETWEEN CURDATE() AND DATE_ADD(CURDATE(), INTERVAL 3 DAY)
This will eventually add extra 3 days of buffer to the current date.
update tablename set coldate=DATE_ADD(coldate, INTERVAL 2 DAY)
SELECT DATE_ADD(CURDATE(), INTERVAL 2 DAY)
For your need:
UPDATE classes SET `date` = DATE_ADD(`date`, INTERVAL 2 DAY) WHERE id = 161
DATE_ADD(FROM_DATE_HERE, INTERVAL INTERVAL_TIME_HERE DAY)
will give the Date after adjusting the INTERVAL
DATE_ADD(NOW(), INTERVAL -1 DAY) for deducting 1 DAY from current Day DATE_ADD(NOW(), INTERVAL 2 DAY) for adding 2 Days
You can use like
UPDATE classes WHERE date=(DATE_ADD(date, INTERVAL 1 DAY)) WHERE id=161
SET date = DATE_ADD( fieldname, INTERVAL 2 DAY )