Ensure that there is no overlap in the dates

Connected to Oracle Database 11g Release 11.2.0.1.0

create table xdate

(date of datein,

date of dateout)

insert into xdate values

(to_date (' 01/01/2013 ',' dd/mm/yyyy'),

to_date('01/02/2013','dd/mm/yyyy'))

insert into xdate values

(to_date (' 01/02/2013 ',' dd/mm/yyyy'),

to_date('14/02/2013','dd/mm/yyyy'))

insert into xdate values

(to_date (' 13/02/2013 ',' dd/mm/yyyy'),

null)

Select * from xdate

01/01/2013 01/02/2013

01/02/2013-14/02/2013

13/02/2013

How can I make sure that the next user record does not overlap the datein dates or dates of dateout? dateOut can be null

It must be a continuous set of dates with no overlap. I hope that I was clear, if it's not made me know.

Thanks in advance!

Have a look here: http://asktom.oracle.com/pls/apex/f?p=100:11:0:P11_QUESTION_ID:474221407101

Tags: Database

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