Postgres 19 Adds Native Temporal Table Support: A Deep Dive into SQL:2011 Features
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Summary
Postgres 19 is introducing native temporal table support based on the SQL:2011 standard, allowing users to query what data looked like at specific points in time. The article by Shaun Thomas covers key features like WITHOUT OVERLAPS, FOR PORTION OF, and temporal foreign keys, while also discussing what's still missing from the implementation. This addresses a long-standing gap in PostgreSQL compared to other database engines that adopted temporal features earlier.
Key quotes
· 3 pulledShort of adding an entire audit trigger system, how can we know what data looked like before and after a change at that exact date?
The SQL:2011 standard formalized a proper solution over a decade ago with temporal tables.
Other database engines adopted pieces of it relatively quickly. Characteristically, Postgres took its time.
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