Road to Percona Live 2022 - Denis Magda - PostgreSQL Talk
summary
Compares the actual degree of PostgreSQL compatibility across four concrete engines and shows what breaks and what runs unchanged, mapping supported SQL features, extensions, data types, transaction semantics and migration work. Tests Google Spanner Amazon Aurora CockroachDB YugabyteDB against real PostgreSQL behaviors and quantifies the porting effort so developers see the number of incompatibilities, the specific features to rewrite, and whether a migrated app actually works.
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