alter_index(7) [osx man page]

ALTER 
INDEX(7)							   SQL Commands 						    ALTER INDEX(7)

NAME

       ALTER INDEX - change the definition of an index

SYNOPSIS

       ALTER INDEX name RENAME TO new_name
       ALTER INDEX name SET TABLESPACE tablespace_name
       ALTER INDEX name SET ( storage_parameter = value [, ... ] )
       ALTER INDEX name RESET ( storage_parameter [, ... ] )

DESCRIPTION

       ALTER INDEX changes the definition of an existing index.  There are several subforms:

       RENAME The RENAME form changes the name of the index.  There is no effect on the stored data.

       SET TABLESPACE
	      This form changes the index's tablespace to the specified tablespace and moves the data file(s) associated with the index to the new
	      tablespace.  See also CREATE TABLESPACE [create_tablespace(7)].

       SET ( storage_parameter = value [, ... ] )
	      This form changes one or more index-method-specific storage parameters for the index. See CREATE INDEX [create_index(7)] for details
	      on the available parameters. Note that the index contents will not be modified immediately by this command; depending on the parame-
	      ter you might need to rebuild the index with REINDEX [reindex(7)] to get the desired effects.

       RESET ( storage_parameter [, ... ] )
	      This form resets one or more index-method-specific storage parameters to their defaults. As with SET, a REINDEX might be	needed	to
	      update the index entirely.

PARAMETERS

       name   The name (possibly schema-qualified) of an existing index to alter.

       new_name
	      The new name for the index.

       tablespace_name
	      The tablespace to which the index will be moved.

       storage_parameter
	      The name of an index-method-specific storage parameter.

       value  The new value for an index-method-specific storage parameter.  This might be a number or a word depending on the parameter.

NOTES

       These  operations  are also possible using ALTER TABLE [alter_table(7)].  ALTER INDEX is in fact just an alias for the forms of ALTER TABLE
       that apply to indexes.

       There was formerly an ALTER INDEX OWNER variant, but this is now ignored (with a warning). An index cannot have an owner different from its
       table's owner. Changing the table's owner automatically changes the index as well.

       Changing any part of a system catalog index is not permitted.

EXAMPLES

       To rename an existing index:

       ALTER INDEX distributors RENAME TO suppliers;

       To move an index to a different tablespace:

       ALTER INDEX distributors SET TABLESPACE fasttablespace;

       To change an index's fill factor (assuming that the index method supports it):

       ALTER INDEX distributors SET (fillfactor = 75);
       REINDEX INDEX distributors;

COMPATIBILITY

       ALTER INDEX is a PostgreSQL extension.

SEE ALSO

       CREATE INDEX [create_index(7)], REINDEX [reindex(7)]

SQL - Language Statements					    2010-05-14							    ALTER INDEX(7)

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CREATE 
TABLESPACE(7)						   SQL Commands 					      CREATE TABLESPACE(7)

NAME

       CREATE TABLESPACE - define a new tablespace

SYNOPSIS

       CREATE TABLESPACE tablespacename [ OWNER username ] LOCATION 'directory'

DESCRIPTION

       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 tablespacename to CREATE DATABASE, CREATE TABLE, CREATE INDEX or ADD CONSTRAINT to have the
       data files for these objects stored within the specified tablespace.

PARAMETERS

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

       username
	      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 must be empty and must be owned by the PostgreSQL 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.

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 PostgreSQL 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)]

SQL - Language Statements					    2010-05-14						      CREATE TABLESPACE(7)

Linux and UNIX Man Pages

alter_index(7) [osx man page]

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