Subject Re: Ordering with nulls first and index usage
Author Dmitry Yemanov
01.12.2012 1:26, Leyne, Sean wrote:
>
> In order for an index to be used for ORDER BY, the sort order much match
> exactly the storage order of the index.

Correct.

> All indexes have NULLs stored at the end (ie. not first).

ASC indices have NULLs stored in the beginning, DESC indices have NULLs
stored at the end.


Dmitry