How to get the day before and the day after the current time in MySQL
This article introduces how to get the current time in MySQL the day before and the day after. The content is very detailed. Interested friends can use it for reference. I hope it will be helpful to you.
MySQL adds a time interval to the date with the date_add () function
MySQL subtracts a time interval from the date using the date_sub () function
The experiments are as follows:
Mysql > select now ()
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| | now () |
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| | 2017-03-15 16:57:30 |
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1 row in set (0.00 sec)
Mysql > set @ dt = now ()
Query OK, 0 rows affected (0.00 sec)
Add one day:
Mysql > select date_add (@ dt, interval 1 day)
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| | date_add (@ dt, interval 1 day) | |
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| | 2017-03-16 16:57:32 |
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1 row in set (0.00 sec)
One day less:
Mysql > select date_sub (@ dt, interval 1 day)
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| | date_sub (@ dt, interval 1 day) | |
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| | 2017-03-14 16:57:32 |
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1 row in set (0.00 sec)
By the same token, an additional hour and a minute can be used:
Select date_add (@ dt, interval 1 hour);-- add one hour
Select date_add (@ dt, interval 1 minute);-- add one minute
Select date_add (@ dt, interval 1 second);-- add one second
Select date_add (@ dt, interval 1 microsecond);-- add a nuance
Select date_add (@ dt, interval 1 week);-- add one week
Select date_add (@ dt, interval 1 month);-- add one month
Select date_add (@ dt, interval 1 quarter); add one quarter (three months)
One hour less, one minute can be used:
Select date_sub (@ dt, interval 1 hour);-- one hour less
Select date_sub (@ dt, interval 1 minute);-- one minute less
Select date_sub (@ dt, interval 1 second);-- one second less
Select date_sub (@ dt, interval 1 microsecond);-- reduce a little bit
Select date_sub (@ dt, interval 1 week);-- one week less
Select date_sub (@ dt, interval 1 month);-- one month less
Select date_sub (@ dt, interval 1 quarter);-reduced by one quarter (three months)
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