IVM Development Group is pleased to announce the release of pg_ivm 1.3.
Changes since the v1.2 release include:
New feature
Add get_immv_def function (Takuma Hoshiai)
This function reconstructs the underlying SELECT command for an IMMV.
Bug fixes
Fix a maintenance failure of MIN/MAX aggregate views whose columns had alias names (Yugo Nagata)
Views that have a min/max aggregate with an alias name (e.g. min(j) as min_j) were not correctly handled and an error could be raised when a tuple was deleted from a base table.
Fix possible incorrect maintenance due to XID wraparound or using sub-transactions (Yugo Nagata)
Fix a bug that any table cannot be dropped by non-superuser (Yugo Nagata)
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.