postgresql 13 Archives - 2ndQuadrant

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PostgreSQL 13: LIMIT … WITH TIES

September 16, 2020/4 Comments/in 2ndQuadrant, Alvaro's PlanetPostgreSQL, PostgreSQL 13 /by Álvaro Herrera

A simple description of the new WITH TIES standard feature in PostgreSQL 13.

Parallelism comes to VACUUM

September 2, 2020/1 Comment/in 2ndQuadrant, Masahiko's Planet PostgreSQL, PostgreSQL, PostgreSQL 13 /by Masahiko Sawada

Vacuum is one of the most important features for reclaiming deleted tuples in tables and indexes. Without vacuum, tables and indexes would continue to grow in size without bounds. This blog post describes the PARALLEL option for VACUUM command, which is newly introduced to PostgreSQL13. Vacuum Processing Phases Before discussing the new option in depth […]

PostgreSQL 13: Don’t let slots kill your primary

July 30, 2020/0 Comments/in 2ndQuadrant, Alvaro's PlanetPostgreSQL, PostgreSQL 13 /by Álvaro Herrera

One of the interesting new features in PostgreSQL for some time now is the ability to control removal of WAL files using replication slots. The dark side is that replication slots can cause disks to fill up with old WAL, killing the main production server. In this article I explain PostgreSQL replication slots, and how a new feature in PostgreSQL 13 helps prevent this problem.

Unicode normalization in PostgreSQL 13

July 23, 2020/3 Comments/in Eisentraut's PlanetPostgreSQL, PostgreSQL /by Peter Eisentraut

Unicode equivalence Unicode is a complicated beast. One of its numerous peculiar features is that different sequences of codepoints can be equal. This is not the case in legacy encodings. In LATIN1, for instance, the only thing that is equal to ‘a’ is ‘a’ and the only thing that is equal to ‘ä’ is ‘ä’. […]

Backup manifests and pg_verifybackup in PostgreSQL 13

May 4, 2020/0 Comments/in Gabriele's PlanetPostgreSQL /by Gabriele Bartolini

PostgreSQL 13 introduces two useful features to enhance automated validation of physical backups: backup manifests and a new tool called pg_verifybackup. In this short article I attempt to provide an overview of them.

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Posts

PostgreSQL 13: LIMIT … WITH TIES

Parallelism comes to VACUUM

PostgreSQL 13: Don’t let slots kill your primary

Unicode normalization in PostgreSQL 13

Backup manifests and pg_verifybackup in PostgreSQL 13

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