[postgis-devel] CLUSTER in 8.3

[Obe, Regina]

I tried your test on my all_counties table and it worked fine.  But I was doing it from pgadmin III.  and I have left out that  clusture thing you were doing.  What does that do? :)

create table ttt as select * from all_counties;
create index ttt_gix on ttt using gist(the_geom);
cluster ttt using ttt_gix;
select count(*) from all_counties;

-- gives me 3141 records --

I guess we must have similar county tables since we have the same record count.

My projection is in 3395.

running
"PostgreSQL 8.3.5 on i686-redhat-linux-gnu, compiled by GCC gcc (GCC) 4.1.2 20071124 (Red Hat 4.1.2-42)"
"POSTGIS="1.3.4" GEOS="3.0.3-CAPI-1.4.2" PROJ="Rel. 4.5.0, 22 Oct 2006" USE_STATS"

Hope that helps,
Regina

-----Original Message-----
From: postgis-devel-bounces at postgis.refractions.net on behalf of Paul Ramsey
Sent: Thu 12/4/2008 3:37 PM
To: PostGIS Development Discussion
Subject: Re: [postgis-devel] CLUSTER in 8.3
 
Maybe I'm doing something wrong... here's a log of how I exercised this:

pramsey=# create table ttt as select * from counties;
SELECT
pramsey=# create index ttt_gix on ttt using gist(the_geom);
CREATE INDEX
pramsey=# clusture
pramsey=# select count(*) from ttt;
 count
-------
  3141
(1 row)

pramsey=# cluster ttt using ttt_gix;
CLUSTER
pramsey=# select count(*) from ttt;
 count
-------
     0
(1 row)

pramsey=# select version();
                                                           version
------------------------------------------------------------------------------------------------------------------------------
 PostgreSQL 8.3.5 on i386-apple-darwin9.5.0, compiled by GCC
i686-apple-darwin9-gcc-4.0.1 (GCC) 4.0.1 (Apple Inc. build 5465)
(1 row)

pramsey=# select postgis_full_version();
                                postgis_full_version
-------------------------------------------------------------------------------------
 POSTGIS="1.3.4SVN" GEOS="3.1.0-CAPI-1.5.0" PROJ="Rel. 4.6.0, 21 Dec
2007" USE_STATS
(1 row)

pramsey=#


On Wed, Dec 3, 2008 at 8:43 AM, Kevin Neufeld <kneufeld at refractions.net> wrote:
> Is seems fine (for Points anyway) on my 8.3.3 install running on an old FC3
> box.
>
> Did you run out of disk space?  Did the transaction get half way through and
> was forced to stop?
>
> -- Kevin
>
> Paul Ramsey wrote:
>>
>> Is it just me, or has clustering on spatial indexes stopped working in
>> 8.3? First, the syntax of CLUSTER has been changed, from "CLUSTER
>> [index] ON [table]" to "CLUSTER [table] USING [index]". Second, when I
>> run the new syntax using a gist index as the target, the index
>> disappears and all row count drops to zero!
>>
>> P.
>> _______________________________________________
>> postgis-devel mailing list
>> postgis-devel at postgis.refractions.net
>> http://postgis.refractions.net/mailman/listinfo/postgis-devel
>
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