Re: Very specialised query

On Thu, 26 Mar 2009, I wrote:
> release-16.0-preview-14-mar=# \d location
> Table "public.location"
> Column | Type | Modifiers
> -----------------+---------+-----------
> end | integer |
> start | integer |
> objectid | integer |
> id | integer | not null
> Indexes:
> "location__object" btree (objectid, id)
> "location__start" btree (start)
> "location_bioseg" gist (bioseg_create(intermine_start, intermine_end))

So, it would be useful if we could make the location_bioseg index a
multi-column index, like this:

CREATE INDEX location_bioseg3 ON location USING GIST (objectid, bioseg_create(intermine_start, intermine_end));

However, I get the following error message:

ERROR: data type integer has no default operator class for access method "gist"
HINT: You must specify an operator class for the index or define a default operator class for the data type.

Is there an operator class for integer for gist indexes that I can use?

Matthew

--
And why do I do it that way? Because I wish to remain sane. Um, actually,
maybe I should just say I don't want to be any worse than I already am.
- Computer Science Lecturer