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alter_index(7) [osx man page]

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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ALTER DATABASE - change a database SYNOPSIS
ALTER DATABASE name [ [ WITH ] option [ ... ] ] where option can be: CONNECTION LIMIT connlimit ALTER DATABASE name RENAME TO newname 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 set- tings. 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. newname 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, equiva- lently, RESET is used, the database-specific setting is removed, so the system-wide default setting will be inherited in new ses- sions. 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 [set(7)] and 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 [set(7)], CREATE TABLESPACE [create_tablespace(7)] SQL - Language Statements 2010-05-14 ALTER DATABASE(7)
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