IVM Development Group is pleased to announce the release of [pg_ivm 1.13](
https://github.com/sraoss/pg_ivm/releases/tag/v1.13 ).
Changes since the v1.12 release include:
### New feature
* Add support for outer joins (Yugo Nagata)
Views that include outer joins are now supported, under the following
restrictions:
- The target list of an outer join view must include all attributes used in
join conditions.
- The target list of an outer join view cannot contain non-strict functions.
- Only simple equijoins are supported.
- The WHERE clause of an outer join view cannot contain non-null-rejecting
predicates.
- Aggregates are not supported in outer join views.
- Subqueries are not supported in outer join views.
#### Acknowledgements
The development of the outer join support was sponsored by Mediapart.
### About pg_ivm
pg_ivm is an extension module that provides Incremental View Maintenance (IVM)
feature.
Incremental View Maintenance (IVM) is a way to make materialized views
up-to-date in
which only incremental changes are computed and applied on views rather than
recomputing.
pg_ivm provides a kind of immediate maintenance, in which materialized views
are updated
immediately after a base table is modified.
Source repository:
[https://github.com/sraoss/pg_ivm](https://github.com/sraoss/pg_ivm)
