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pg_visibility

A contrib module for examining and rebuilding the visibility map and page-level visibility information of a table

pg_visibility is an extension provided as a contrib module for examining and rebuilding the visibility map and page-level visibility information of a table.

pg_visibility was added in PostgreSQL 9.6.

Change history

PostgreSQL 10
- All functions (with the exception of pg_truncate_visibility_map()) can be executed by members of the pg_stat_scan_tables role (commit 25fff407)
PostgreSQL 9.6
- added (commit ba0a198f)

References

PostgreSQL documentation: pg_visibilty

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Postgres 9.6 feature highlight - pg_visibility - June 2016 blog article by Michael Paquier

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visibility map