>>Is it possible to make a composite GiST index?  I want to create an 
>>index on a txtidx and a timestamp column - is that at all possible?
> 
> OK, this is what I'm trying (7.3.4):
> 
> create index blah on forums_posts using gist(ftiidx, datetime);
> 
> ERROR:  data type timestamp with time zone has no default operator 
> class 
> for access method "gist"
>          You must specify an operator class for the index or define a
>          default operator class for the data type
> 
> I guess I can put an ops indicator in there, but I have no idea what to 
> try using...
> 
> Chris

Install contrib/btree_gist so you can include the timestamp field in a gist index.  Teodor Sigaev
suggested this on the openfts mailing list at:
http://sourceforge.net/mailarchive/message.php?msg_id=5349399

The btree_gist readme file says it supports the int2, int8, float4, float8, and timestamp data
types.  

George Essig

Mon, 5 Jan 2004 07:41:12 -0800 (PST)
George Essig <george_essig@yahoo.com>
Re: Composite GiST indexes?