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clusterdb (1)
  • >> clusterdb (1) ( Linux man: Команды и прикладные программы пользовательского уровня )
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    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 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.  

    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 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.
    -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 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.  

    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)


     

    Index

    NAME
    SYNOPSIS
    DESCRIPTION
    OPTIONS
    ENVIRONMENT
    DIAGNOSTICS
    EXAMPLES
    SEE ALSO


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