On 08/11/2014 01:19 AM, worthy7 wrote:
>
> http://www.postgresql.org/docs/9.1/static/gin-implementation.html
> """As of PostgreSQL 9.1, NULL key values can be included in the index. Also,
> placeholder NULLs are included in the index for indexed items that are NULL
> or contain no keys according to extractValue. This allows searches that
> should find empty items to do so."""
>
> How do I define an index that includes nulls then?
You don't need to do anything special, any NULL values will be indexed
automatically.
- Heikki