Question

I have in my database MySQL:

id | text | date_start          | date_stop
1  | aa   | 2011-12-17 10:45:00 | 2011-12-18 15:33:00
2  | aa   | 2011-12-18 19:11:44 | 2011-12-20 10:10:19
3  | aa   | 2011-12-21 15:14:00 | 2011-12-23 11:21:00

and i want check if example date is in database.
for example i im giving:

date_start: 2011-12-17 11:11:11 and date_stop 2011-12-18 16:11:11

this should return false.

date_start: 2011-12-20 11:11:11 and date_stop 2011-12-21 11:11:11

this should return true.

how can i make this? which query should be for this in SQL?

Answer 1

WHERE start_date BETWEEN $start AND $end
OR end_date BETWEEN $start AND $end
OR ($start < start_date AND $end > end_date)

if you have a result, its false, else true.