ALTER INDEXNameALTER INDEX -- change the definition of an index SynopsisALTER INDEX name
action [, ... ]
ALTER INDEX name
RENAME TO new_name
where action is one of:
OWNER TO new_owner
SET TABLESPACE indexspace_nameDescription ALTER INDEX changes the definition of an existing index.
There are several subforms:
- OWNER
This form changes the owner of the index to the
specified user. This can only be done by a superuser.
- 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.
- RENAME
The RENAME form changes the name of the index.
There is no effect on the stored data.
All the actions except RENAME can be combined into
a list of multiple alterations to apply in parallel.
Parameters- name
The name (possibly schema-qualified) of an existing index to
alter.
- new_name
New name for the index.
- new_owner
The user name of the new owner of the index.
- tablespace_name
The tablespace name to which the index will be moved.
Notes These operations are also possible using
ALTER TABLE.
ALTER INDEX is in fact just an alias for the forms
of ALTER TABLE that apply to indexes.
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 a index to a different tablespace:
ALTER INDEX distributors SET TABLESPACE fasttablespace;
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