Re: Updating a very large table

On Freitag 24 April 2009 Rafael Domiciano wrote:
> this table has about 15 indexes...
>
> How good are to Cluster table? Has any criteria to cluster table? How
> can I do it?

http://www.postgresql.org/docs/8.3/interactive/sql-cluster.html
CLUSTER tablename [ USING indexname after which you want data to be
sorted ]

Postgres then rewrites the whole table, which creates a new file on the
disk with the table entries written in the order of the index you chose.
Don't forget the ANALYZE afterwards.

Question: This will not rewrite the indices for that table, right? Then
a REINDEX could be interesting too.

mfg zmi
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