pg_ivm 1.3 released

Posted on 2022-10-03 by IVM Development Group
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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.

Source repository: