| Type: | bool |
| Default: | on |
| Context: | user |
| Restart: | false |
| Since: | 9.2 |
Enables or disables the query planner's use of index-only-scan plan types (see indexes-index-only-scans). The default is on. The enable_indexscan setting must also be enabled to have the query planner consider index-only-scans.