Provided by: postgresql-client-8.4_8.4.11-1_amd64 bug


       clusterdb - cluster a PostgreSQL database


       clusterdb  [  connection-option... ]  [  [ --verbose ]  [ -v ]  ]  [ --table | -t table  ]
       [ dbname ]

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


       clusterdb is a utility for reclustering tables in a PostgreSQL database. 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.


       clusterdb accepts the following command-line arguments:


       --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.


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


              Do not display progress messages.

       -t table

       --table table
              Cluster table only.


              Print detailed information during processing.

       clusterdb also accepts the following command-line arguments for connection 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 extension on which the
              server is listening for connections.

       -U username

       --username username
              User name to connect as.


              Never issue a password prompt. If the server requires password authentication and a
              password  is  not  available  by other means such as a .pgpass file, the connection
              attempt will fail. This option can be useful in batch jobs  and  scripts  where  no
              user is present to enter a password.


              Force clusterdb to prompt for a password before connecting to a database.

              This  option  is  never  essential, since clusterdb will automatically prompt for a
              password if the server demands password authentication.   However,  clusterdb  will
              waste  a  connection attempt finding out that the server wants a password.  In some
              cases it is worth typing -W to avoid the extra connection attempt.





       PGUSER Default connection parameters

       This utility, like most other PostgreSQL utilities, also uses  the  environment  variables
       supported by libpq (see in the documentation).


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


       To cluster the database test:

       $ clusterdb test

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

       $ clusterdb --table foo xyzzy


       CLUSTER [cluster(7)]