ALTER INDEX v11
Name
ALTER INDEX -- modify an existing index.
Synopsis
Advanced Server supports two variations of the ALTER INDEX command compatible with Oracle databases. Use the first variation to rename an index:
ALTER INDEX <name> RENAME TO <new_name>
Use the second variation of the ALTER INDEX command to rebuild an index:
ALTER INDEX <name> REBUILD
Description
ALTER INDEX changes the definition of an existing index. The RENAME clause changes the name of the index. The REBUILD clause reconstructs an index, replacing the old copy of the index with an updated version based on the index's table.
The REBUILD clause invokes the PostgreSQL REINDEX command; for more information about using the REBUILD clause, see the PostgreSQL core documentation at:
https://www.postgresql.org/docs/11/static/sql-reindex.html
ALTER INDEX has no effect on stored data.
Parameters
name
The name (possibly schema-qualified) of an existing index.
new_name
New name for the index.
Examples
To change the name of an index from name_idx to empname_idx:
ALTER INDEX name_idx RENAME TO empname_idx;
To rebuild an index named empname_idx:
ALTER INDEX empname_idx REBUILD;
See Also