Additionally, PostgreSQL 12 can now enable or disable page checksums in an offline cluster using the "pg_checksums" command. Previously page checksums, a feature to help verify the integrity of data stored to disk, could only be enabled at the time a PostgreSQL cluster was initialized with "initdb."
-PostgreSQL 12 also introduces progress reporting statistics for the "CREATE INDEX", "REINDEX", "CLUSTER", and "VACUUM FULL", operations, and to the "pg_checksums" command via the "--progress" flag.
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For a full list of features included in this release, please read the release notes, which can be found at: https://www.postgresql.org/docs/12/release-12.html
## About PostgreSQL