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  5. Igor Suhorukov: Vectorized Query Execution in PostgreSQL 19: Arrow, ORCA and Flight SQL in a PostgreSQL Extension
Igor Suhorukov: Vectorized Query Execution in PostgreSQL 19: Arrow, ORCA and Flight SQL in a PostgreSQL Extension
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Igor Suhorukov: Vectorized Query Execution in PostgreSQL 19: Arrow, ORCA and Flight SQL in a PostgreSQL Extension

Last week I ported Apache Cloudberry to PostgreSQL 19 as a set of extensions and described where the port falls behind the original fork. On ClickBench, columnar engines beat it by an order of magnitude. The culprit isn’t the MPP…

DatabasesPlanet PostgreSQLPublished: October 7, 2026
Databases
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Christophe Pettus: All Your GUCs in a Row: num_os_semaphores

PostgreSQL 18's new `num_os_semaphores` preset reports how many OS semaphores the server needs—a formula that drifted wrong for twelve years until the… (I consult on PostgreSQL through PGX Inc..)

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