Re: checking the gaps in intervals

Anton Gavazuk <antongavazuk(at)gmail(dot)com> wrote:

> Hi dear community,
>
> Have probably quite simple task but cannot find the solution,
>
> Imagine the table A with 2 columns start and end, data type is date
>
> start end
> 01 dec. 10 dec
> 11 dec. 13 dec
> 17 dec. 19 dec
> .....
>
> If I have interval, for example, 12 dec-18 dec, how can I determine
> that the interval cannot be fully covered by values from table A
> because of the gap 14-16 dec? Looking for solution and unfortunately
> nothing has come to the mind yet...

I'm thinking about a solution with DATERANGE (PostgreSQL 9.2)...

Are start and end including or excluding?

Andreas
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