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)

ALTER 
DATABASE(7)					  PostgreSQL 9.2.7 Documentation					 ALTER DATABASE(7)

NAME

       ALTER_DATABASE - change a database

SYNOPSIS

       ALTER DATABASE name [ [ WITH ] option [ ... ] ]

       where option can be:

	   CONNECTION LIMIT connlimit

       ALTER DATABASE name RENAME TO new_name

       ALTER DATABASE name OWNER TO new_owner

       ALTER DATABASE name SET TABLESPACE new_tablespace

       ALTER DATABASE name SET configuration_parameter { TO | = } { value | DEFAULT }
       ALTER DATABASE name SET configuration_parameter FROM CURRENT
       ALTER DATABASE name RESET configuration_parameter
       ALTER DATABASE name RESET ALL

DESCRIPTION

       ALTER DATABASE changes the attributes of a database.

       The first form changes certain per-database settings. (See below for details.) Only the database owner or a superuser can change these
       settings.

       The second form changes the name of the database. Only the database owner or a superuser can rename a database; non-superuser owners must
       also have the CREATEDB privilege. The current database cannot be renamed. (Connect to a different database if you need to do that.)

       The third form changes the owner of the database. To alter the owner, you must own the database and also be a direct or indirect member of
       the new owning role, and you must have the CREATEDB privilege. (Note that superusers have all these privileges automatically.)

       The fourth form changes the default tablespace of the database. Only the database owner or a superuser can do this; you must also have
       create privilege for the new tablespace. This command physically moves any tables or indexes in the database's old default tablespace to
       the new tablespace. Note that tables and indexes in non-default tablespaces are not affected.

       The remaining forms change the session default for a run-time configuration variable for a PostgreSQL database. Whenever a new session is
       subsequently started in that database, the specified value becomes the session default value. The database-specific default overrides
       whatever setting is present in postgresql.conf or has been received from the postgres command line. Only the database owner or a superuser
       can change the session defaults for a database. Certain variables cannot be set this way, or can only be set by a superuser.

PARAMETERS

       name
	   The name of the database whose attributes are to be altered.

       connlimit
	   How many concurrent connections can be made to this database. -1 means no limit.

       new_name
	   The new name of the database.

       new_owner
	   The new owner of the database.

       new_tablespace
	   The new default tablespace of the database.

       configuration_parameter, value
	   Set this database's session default for the specified configuration parameter to the given value. If value is DEFAULT or, equivalently,
	   RESET is used, the database-specific setting is removed, so the system-wide default setting will be inherited in new sessions. Use
	   RESET ALL to clear all database-specific settings.  SET FROM CURRENT saves the session's current value of the parameter as the
	   database-specific value.

	   See SET(7) and Chapter 18, Server Configuration, in the documentation for more information about allowed parameter names and values.

NOTES

       It is also possible to tie a session default to a specific role rather than to a database; see ALTER ROLE (ALTER_ROLE(7)). Role-specific
       settings override database-specific ones if there is a conflict.

EXAMPLES

       To disable index scans by default in the database test:

	   ALTER DATABASE test SET enable_indexscan TO off;

COMPATIBILITY

       The ALTER DATABASE statement is a PostgreSQL extension.

SEE ALSO

       CREATE DATABASE (CREATE_DATABASE(7)), DROP DATABASE (DROP_DATABASE(7)), SET(7), CREATE TABLESPACE (CREATE_TABLESPACE(7))

PostgreSQL 9.2.7						    2014-02-17							 ALTER DATABASE(7)