Chris van Eijk: CREATE POLICY IF NOT EXISTS in PostgreSQL: what works

2026-10-16来源 Planet PostgreSQLEnglish
PostgreSQL has no CREATE POLICY IF NOT EXISTS. Three ways to write a repeatable policy migration, measured on PostgreSQL 17 and 18: gaps, locks and races.

原文：https://www.a8q9.cn/en/article/chris-van-eijk-create-policy-if-not-exists-in-postgresql-what-works-7ed641.html

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