检查输入的日期时间是否在2个datetime值的范围之间

Question

I have table which contains 2 columns startdate and enddate for storing the start and end time of fun program in a particular venue.(Both columns are having format of datetime-format is 'Ymd H:i:s').When a user creates a program within this time limit or the end time of the program lies within the time limit but not the start time or the start time lies within the time limit but not the end time ,the program should not be inserted into the table showing an alert.I have written the query like this.But it doesn't work properly.

SELECT * FROM tbl_venue WHERE venue_id='id' AND
((venue_start_datetime BETWEEN 'entered starttime' AND 'entered end time')
AND (venue_stop_datetime BETWEEN 'entered starttime' AND 'entered end time'))    

Thanks in advance.

Answer 1

Try this:

SELECT * 
FROM tbl_venue 
WHERE venue_id='id' AND
'entered starttime' >= venue_start_datetime
AND 'entered end time' <= venue_stop_datetime
AND 'entered starttime' <= 'entered end time'

Answer 2

You jast have to test if the entered startdate is between start and enddate or the entererd enddate is between start and enddate

SELECT * FROM tbl_venue WHERE venue_id='id' AND
('entered starttime' BETWEEN venue_start_datetime AND venue_stop_datetime
OR 'entered endtime' BETWEEN venue_start_datetime AND venue_stop_datetime)