trusty (7) CREATE_TABLESPACE.7.gz

NAME

       CREATE_TABLESPACE - define a new tablespace

SYNOPSIS

       CREATE TABLESPACE tablespace_name [ OWNER user_name ] LOCATION 'directory'

DESCRIPTION

           Note
           The following description applies both to Postgres-XC and PostgreSQL if not described explicitly.

       CREATE TABLESPACE registers a new cluster-wide tablespace. The tablespace name must be distinct from the
       name of any existing tablespace in the database cluster.

       A tablespace allows superusers to define an alternative location on the file system where the data files
       containing database objects (such as tables and indexes) can reside.

       A user with appropriate privileges can pass tablespace_name to CREATE DATABASE, CREATE TABLE, CREATE
       INDEX or ADD CONSTRAINT to have the data files for these objects stored within the specified tablespace.

PARAMETERS

       tablespace_name
           The name of a tablespace to be created. The name cannot begin with pg_, as such names are reserved
           for system tablespaces.

       user_name
           The name of the user who will own the tablespace. If omitted, defaults to the user executing the
           command. Only superusers can create tablespaces, but they can assign ownership of tablespaces to
           non-superusers.

       directory
           The directory that will be used for the tablespace. The directory should be empty and must be owned
           by the Postgres-XC system user. The directory must be specified by an absolute path name.

NOTES

       Tablespaces are only supported on systems that support symbolic links.

       CREATE TABLESPACE cannot be executed inside a transaction block.

           Note
           The following description applies only to Postgres-XC

       Postgres-XC assigns the same path to a tablespace for all the Coordinators and Datanodes. So when
       creating a tablespace, user needs to have permission to the same location path on all the servers
       involved in the cluster.

       CREATE TABLESPACE can be run with EXECUTE DIRECT to control tablespace existence on remote nodes. This
       works for both remote Coordinators and Datanodes but not on this operation is not authorized on node
       where application client is connected.

EXAMPLES

       Create a tablespace dbspace at /data/dbs:

           CREATE TABLESPACE dbspace LOCATION '/data/dbs';

       Create a tablespace indexspace at /data/indexes owned by user genevieve:

           CREATE TABLESPACE indexspace OWNER genevieve LOCATION '/data/indexes';

COMPATIBILITY

       CREATE TABLESPACE is a Postgres-XC extension.

SEE ALSO

       CREATE DATABASE (CREATE_DATABASE(7)), CREATE TABLE (CREATE_TABLE(7)), CREATE INDEX (CREATE_INDEX(7)),
       DROP TABLESPACE (DROP_TABLESPACE(7)), ALTER TABLESPACE (ALTER_TABLESPACE(7))