"Version-Upgrade"
- PostgreSQL major version upgrade (14 → 17)：為什麼這篇不套 5 type migration PostgreSQL major version upgrade 是 *5 type 漏類* 的實證 — source/target 同 vendor、5 維度都 Low 但 *upgrade-specific audit* 是核心；本文結構接近 deep article methodology 的 6-section + 額外 upgrade audit 段；涵蓋 pg_upgrade / logical replication / blue-green 三方法、extension 相容性、5 production 踩雷