Let's say that we have some posts, movies, files or other items that should be visible to end user in two situations:
- when availability date is not set (equals
0000-00-00 00:00:00) or
- when availability date s higher that current date?
Here is how.
SELECT * FROM `contents` WHERE ( availability_date = "0000-00-00 00:00:00" OR TIMESTAMPDIFF(MINUTE, NOW(), availability_date) >= 0 );
This will "hide" (not select) any record, which
availability_date is current time (in minutes, but you can of course change that) or at least one minute into future. Any record which
availability_date is at least one minute "older" than current time will not be selected.
If you wish to exclude also records that have
availability_date equal current time (
NOW()) then simply change
>= operator into
Read more in MySQL manual --