How to get the number of days of difference between two dates on MySQL?
MysqlDateMysql Problem Overview
I need to get the number of days contained within a couple of dates on MySQL.
For example:
- Check in date is
12-04-2010 - Check out date
15-04-2010
The day difference would be 3.
Mysql Solutions
Solution 1 - Mysql
What about the DATEDIFF function ?
Quoting the manual's page :
> DATEDIFF() returns expr1 – expr2 > expressed as a value in days from one > date to the other. expr1 and expr2 > are date or date-and-time expressions. > Only the date parts of the values are > used in the calculation
In your case, you'd use :
mysql> select datediff('2010-04-15', '2010-04-12');
+--------------------------------------+
| datediff('2010-04-15', '2010-04-12') |
+--------------------------------------+
| 3 |
+--------------------------------------+
1 row in set (0,00 sec)
But note the dates should be written as YYYY-MM-DD, and not DD-MM-YYYY like you posted.
Solution 2 - Mysql
Note if you want to count FULL 24h days between 2 dates, datediff can return wrong values for you.
As documentation states:
> Only the date parts of the values are used in the calculation.
which results in
select datediff('2016-04-14 11:59:00', '2016-04-13 12:00:00')
returns 1 instead of expected 0.
Solution is using select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');
(note the opposite order of arguments compared to datediff).
Some examples:
select timestampdiff(DAY, '2016-04-13 11:00:01', '2016-04-14 11:00:00');returns 0select timestampdiff(DAY, '2016-04-13 11:00:00', '2016-04-14 11:00:00');returns 1select timestampdiff(DAY, '2016-04-13 11:00:00', now());returns how many full 24h days has passed since 2016-04-13 11:00:00 until now.
Hope it will help someone, because at first it isn't much obvious why datediff returns values which seems to be unexpected or wrong.
Solution 3 - Mysql
Use the DATEDIFF() function.
Example from documentation:
SELECT DATEDIFF('2007-12-31 23:59:59','2007-12-30');
-> 1
Solution 4 - Mysql
I prefer TIMESTAMPDIFF because you can easily change the unit if need be.
Solution 5 - Mysql
Get days between Current date to destination Date
SELECT DATEDIFF('2019-04-12', CURDATE()) AS days;
output days
335
Solution 6 - Mysql
SELECT md.*, DATEDIFF(md.end_date, md.start_date) AS days FROM membership_dates md
output::
id entity_id start_date end_date days
1 1236 2018-01-16 00:00:00 2018-08-31 00:00:00 227
2 2876 2015-06-26 00:00:00 2019-06-30 00:00:00 1465
3 3880 1990-06-05 00:00:00 2018-07-04 00:00:00 10256
4 3882 1993-07-05 00:00:00 2018-07-04 00:00:00 9130
Solution 7 - Mysql
If you want a more accurate value than just the rounded up number of days:
select timestampdiff(minute, min(date_col), max(date_col))/1440 from table
Solution 8 - Mysql
TIMESTAMPDIFF(DAY,STR_TO_DATE(date_format('2018-01-01', '%d-%m-%YYYY'),'%d-%m-%YYYY'), '2020-01-01') TOTAL_DAYS
> TOTAL_DAYS: 730 days