-----Original Message----- From: Jeff Janes [mailto:jeff.janes@xxxxxxxxx] Sent: Thursday, November 29, 2012 11:19 AM To: Schnabel, Robert D. Cc: pgsql-general@xxxxxxxxxxxxxx Subject: Re: When does CLUSTER occur? On Thu, Nov 29, 2012 at 8:11 AM, Schnabel, Robert D. <schnabelr@xxxxxxxxxxxx> wrote: > My question is whether or not the "ALTER TABLE gen1011 CLUSTER ON > xgen1011_si_sn" actually clusters the table at that point or if it > just tells it to use that index for clustering? It just marks it to use that index if/when it is clustered, it doesn't do the clustering. Cheers, Jeff [Schnabel, Robert D.] That's what I thought because I just went through this exercise for another table which was previously clustered. The correlation on the column for the index was 1. After I did the drop index, insert data, create index with the cluster command the correlation was <1. Thanks for the clarification. Bob -- Sent via pgsql-general mailing list (pgsql-general@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
