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There is a misconception I keep running into, and it causes real harm in production. People are afraid to increase checkpoint_timeout. They think a longer timeout means a longer recovery after a crash. So they set it to 5 minutes. Some set…
PostgreSQL 13 made hash aggregation memory-safe by allowing it to spill to disk — but that safety introduced a surprise regression for some queries on upgrade.
Learn relational algebra by building expressions that compile to real SQL.
We often hear that open source is about people. People who contribute their time and, in a way, parts of their lives to work on software that is available for everyone without limitations and without licensing costs. The more popular a…