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    Posts

    Tag: what’s new

    Read the latest PostgreSQL news, the most important topics are covered in CYBERTEC’s “what’s new” blog posts. New features, version releases, and more.
     
     

    22.08.2023 | Laurenz Albe

    Postgres v16: 14 Cool New Features

    PostgreSQL v16 contains many new features and enhancements. Here are PG v16’s 14 best new features: Everybody's favorite: You no longer need an alias for subqueries in FROM This in an extension to the standard, but makes porting queries from Oracle easier.   Improve performance of vacuum freezing Have you ever suffered from massive anti-wraparound autovacuum […]

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    25.04.2023 | Pavlo Golub

    LZ4 and ZSTD pg_dump compression in PostgreSQL 16

    LZ4 and ZSTD pg_dump compression I wrote a “pg_dump compression specifications in PostgreSQL 16” post a while ago. Frankly speaking, I thought new compression methods would not be implemented in PostgreSQL until 2-3 years from now. Probably demand is so high that LZ4 and ZSTD made their way into PostgreSQL 16! The LZ4 patch author […]

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    18.04.2023 | Pavlo Golub

    Underscores in numeric constants in PostgreSQL 16

    SQL and numeric constants NEW in PostgreSQL 16 – support for underscores in integer and numeric constants! I already wrote about support for different notations in the upcoming PostgreSQL 16. This new major version also implements the SQL:202x standard (draft), allowing you to use underscore separators for integers and numeric constants. Using underscore separators in […]

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    28.03.2023 | Pavlo Golub

    New old “debug_parallel_query” setting in PostgreSQL 16

    Naming variables Why will force_parallel_mode – the runtime option be renamed to debug_parallel_query in PostgreSQL 16? Proper variable and function naming play a vital role in making code understandable, maintainable, and easily shareable. When we give our variables descriptive names that reflect their purpose, it becomes much simpler for others to understand our code, follow […]

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    15.03.2023 | Pavlo Golub

    pg_timetable v5.3 is out!

    Our team is proud to introduce a new pg_timetable v5.3 release! This time we focused solely on implementing new features for logging. I want to remind you that pg_timetable is a community project. So, please, don’t hesitate to ask any questions, to report bugs, to star the pg_timetable project, and to tell the world about […]

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    15.02.2023 | Pavlo Golub

    Go & PostgreSQL: FOSDEM 2023 talk

    Intro On the 5th of February 2023, I had the privilege of giving a talk at the PostgreSQL devroom during FOSDEM 2023 titled “When it all GOes right.” My talk focused on the process of creating programs in the Go language using a PostgreSQL database. It was an incredible opportunity to share my insights and […]

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    07.02.2023 | Pavlo Golub

    Reserve connections in PostgreSQL 16

    Reserve connections for the pg_use_reserved_connections group in PostgreSQL 16 Nathan Bossart implemented a brand-new patch that provides a way to reserve connection slots for non-superusers. The patch was reviewed by Tushar Ahuja and Robert Haas. Committed by Robert Haas. The commit message is: Let’s try reserve connections in our work! Let’s edit the postgresql.conf file […]

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    22.12.2022 | Pavlo Golub

    hex, oct, bin integers in PostgreSQL 16

    SQL and integer notations NEW in PostgreSQL 16 – support for non-decimal notation of integer constants! PostgreSQL already has powerful support for string constants, with E’\t’, E’\011′, E’\u0009′ and U&’\0009′ all meaning the same thing (a “horizontal tab” character). However, PostgreSQL’s support for numerical constants has – up until now – been rather limited; it […]

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    13.12.2022 | Pavlo Golub

    pg_dump compression specifications in PostgreSQL 16

    What is pg_dump compression? pg_dump is a PostgreSQL utility for backing up a local or remote PostgreSQL database. It creates a logical backup file that contains either plain SQL commands for recreating the database, or a binary file that can be restored with the pg_restore utility. The binary backup file can be used to restore […]

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    30.11.2022 | Pavlo Golub

    GRANT VACUUM, ANALYZE in PostgreSQL 16

    What is GRANT VACUUM, ANALYZE? PostgreSQL uses table VACUUM and ANALYZE commands to optimize the database. The VACUUM command reclaims storage space and makes it available for re-use. It also updates the visibility map, which helps the query planner to quickly identify which parts of the table have live rows. The ANALYZE command collects statistics […]

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    22.11.2022 | Hans-Jürgen Schönig

    PostgreSQL ERROR: permission denied for schema public

    In PostgreSQL 15, a fundamental change took place which is relevant to every user who happens to work with permissions: The default permissions of the public schema have been modified. This is relevant because it might hurt you during application deployment. You need to be aware of how it may affect you. Creating users Many […]

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    17.08.2022 | Pavlo Golub

    Aliases for sub-SELECTS in FROM clause

    What are aliases in SQL? SQL aliases in FROM clauses are used to give a result set a temporary name. A result set may be produced by a table or view name, sub-SELECT and/or VALUES clause. An alias is created with the AS keyword, but the grammar allows us to omit it. An alias only […]

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