clusterdb man page on aLinux

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CLUSTERDB(1)		PostgreSQL Client Applications		  CLUSTERDB(1)

NAME
       clusterdb - cluster a PostgreSQL database

SYNOPSIS
       clusterdb [ connection-option... ]  [ --table | -t table	 ]  [ dbname ]

       clusterdb [ connection-option... ]  [  [ --all ]	 [ -a ]	 ]

DESCRIPTION
       clusterdb  is  a	 utility for reclustering tables in a PostgreSQL data‐
       base. It finds tables that have previously been clustered, and clusters
       them again on the same index that was last used. Tables that have never
       been clustered are not affected.

       clusterdb is a wrapper around the  SQL  command	CLUSTER	 [cluster(7)].
       There  is no effective difference between clustering databases via this
       utility and via other methods for accessing the server.

OPTIONS
       clusterdb accepts the following command-line arguments:

       -a

       --all  Cluster all databases.

       [-d] dbname

       [--dbname] dbname
	      Specifies the name of the database to be clustered.  If this  is
	      not  specified  and -a (or --all) is not used, the database name
	      is read from the environment variable PGDATABASE. If that is not
	      set, the user name specified for the connection is used.

       -e

       --echo Echo  the	 commands  that	 clusterdb  generates and sends to the
	      server.

       -q

       --quiet
	      Do not display a response.

       -t table

       --table table
	      Cluster table only.

       clusterdb also accepts the following command-line arguments for connec‐
       tion parameters:

       -h host

       --host host
	      Specifies	 the  host  name of the machine on which the server is
	      running. If the value begins with a slash, it  is	 used  as  the
	      directory for the Unix domain socket.

       -p port

       --port port
	      Specifies	 the  TCP port or local Unix domain socket file exten‐
	      sion on which the server is listening for connections.

       -U username

       --username username
	      User name to connect as.

       -W

       --password
	      Force password prompt.

ENVIRONMENT
       PGDATABASE

       PGHOST

       PGPORT

       PGUSER Default connection parameters

DIAGNOSTICS
       In case of difficulty, see CLUSTER [cluster(7)] and psql(1) for discus‐
       sions  of  potential  problems and error messages.  The database server
       must be running at the targeted host. Also, any default connection set‐
       tings  and  environment	variables  used by the libpq front-end library
       will apply.

EXAMPLES
       To cluster the database test:

       $ clusterdb test

       To cluster a single table foo in a database named xyzzy:

       $ clusterdb --table foo xyzzy

SEE ALSO
       CLUSTER [cluster(7)], Environment Variables (the documentation)

Application			  2005-11-05			  CLUSTERDB(1)
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