IVM Development Group is pleased to announce the release of pg_ivm 1.6.
Changes since the v1.5.1 release include:
Add EXISTS clause support in IVM (Takuma Hoshiai)
Correlated subqueries using EXISTS in WHERE clause are supported.
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