>> WHERE (a,b) OVERLAPS (c,d)
>>
>> to
>>
>> WHERE (a-1,b+1) OVERLAPS (c-1,d+1)
>>
>> Will this give correct results ?
>
> It might give you false positives...
>
> 2006-11-30 -- 2006-12-05 AND 2006-12-06 -- 2006-12-15 (original) --
> FALSE
> 2006-11-29 -- 2006-12-06 AND 2006-12-05 -- 2006-12-16 (changed) --
> TRUE
Jorge,
Thank you very much. Now I try to William Leite Arajo solution by replacing
WHERE (a,b) OVERLAPS (c,d)
with
WHERE ( c BETWEEN a AND b ) OR ( d BETWEEN a AND b )
Is this OK ?
This requires writing a and b expressions twice. How to avoid repeating
expressions ?
Andrus.