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MySQL add days to a date

Posted by: admin November 11, 2017 Leave a comment

Questions:

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?

Answers:

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;

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Answers:
UPDATE table SET nameofdatefield = ADDDATE(nameofdatefield, 2) WHERE ...

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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.

Questions:
Answers:
update tablename set coldate=DATE_ADD(coldate, INTERVAL 2 DAY)

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SELECT DATE_ADD(CURDATE(), INTERVAL 2 DAY)

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For your need:

UPDATE classes 
SET `date` = DATE_ADD(`date`, INTERVAL 2 DAY)
WHERE id = 161

Questions:
Answers:
 DATE_ADD(FROM_DATE_HERE, INTERVAL INTERVAL_TIME_HERE DAY) 

will give the Date after adjusting the INTERVAL

eg.

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

Questions:
Answers:
SET date = DATE_ADD( fieldname, INTERVAL 2 DAY )

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