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PolarDB:Overview

Last Updated:Mar 28, 2026

This topic lists the features supported by each major engine version and edition of PolarDB for PostgreSQL, along with the minimum minor engine version required for each feature.

Note
  • Version numbers shown are the minimum required minor engine version for each feature. All later minor versions of the same major version also support the feature.

  • Supported: The feature is available across all minor versions of that major engine version.

  • Not supported: The feature is not available for that major engine version.

  • (dash): The edition does not exist for that major engine version, or the feature does not apply to that edition.

FeaturePolarDB for PostgreSQL 11PolarDB for PostgreSQL 14PolarDB for PostgreSQL 15PolarDB for PostgreSQL 16PolarDB for PostgreSQL 17PolarDB for PostgreSQL 18
Enterprise EditionEnterprise EditionStandard EditionDistributed EditionEnterprise EditionStandard EditionEnterprise EditionStandard EditionDistributed EditionEnterprise EditionStandard EditionEnterprise EditionStandard Edition
Database Autonomy Service
Garbage collection during off-peak hours2.0.11.15.42.02.0.14.12.24.02.0.15.12.4.02.0.16.8.3.02.0.17.2.2.1Not supported
Automatic index recommendationNot supported2.0.14.10.19.0Not supportedNot supportedNot supportedNot supportedNot supportedNot supportedNot supportedNot supported
Distributed
What is a distributed cluster?Not supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Create and manage distributed tables and replicated tablesNot supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
DML operations on distributed tablesNot supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Optimize queries on distributed tablesNot supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Use and limits of distributed sequencesNot supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Multi-tenant managementNot supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Tenant isolationNot supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Configure CDC to synchronize data changesNot supportedNot supported2.0.14.17.34.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Fast recovery
Online promote read-only nodes2.0.11.2.1.02.0.14.5.1.02.0.15.7.1.12.0.16.3.1.12.0.17.2.1.02.0.18.0.1.0
Parallel WAL log replay2.0.11.9.17.02.0.14.5.1.02.0.15.7.1.12.0.16.3.1.12.0.17.2.1.02.0.18.0.1.0
Logical replication slot failover2.0.11.15.38.0Not supportedNot supportedNot supportedNot supportedNot supported
HTAP
Real-time materialized views2.0.11.9.27.02.0.14.8.11.0Not supportedNot supportedNot supportedNot supportedNot supportedNot supported
Columnstore index (IMCI)Not supported2.0.14.10.20.0Not supported2.0.15.15.7.02.0.16.8.3.02.0.17.7.5.0Not supported
Security and reliability
TDE transparent data encryption2.0.11.2.1.02.0.14.5.1.1Not supportedNot supported2.0.16.9.6.02.0.17.6.4.02.0.18.0.1.0
Confidential database (Public preview)Not supported2.0.14.9.14.0Not supportedNot supportedNot supportedNot supportedNot supported
AI
PolarDB for AINot supported2.0.14.13.28.02.0.15.12.4.02.0.16.6.2.0Not supportedNot supported
Supabase applicationsNot supportedNot supportedNot supportedNot supportedSupportedNot supportedNot supportedNot supported
DynamoDB compatibilityNot supported2.0.14.17.35.0Not supportedNot supportedNot supportedNot supportedNot supportedNot supported
Global database network (GDN)Not supportedSupportedNot supportedNot supportedNot supportedNot supportedNot supported
Intelligent search (PolarSearch)Not supported2.0.14.22.43.0Not supported2.0.15.17.8.02.0.16.11.15.02.0.17.9.6.02.0.18.3.2.0
Memory optimization
Persistent Memory Buffer (PBP)2.0.11.2.1.02.0.14.5.2.0Not supportedNot supportedNot supportedNot supportedNot supported
Global execution plan cache (GPC)2.0.11.9.28.02.0.14.9.15.02.0.15.7.1.12.0.16.3.1.12.0.17.2.1.02.0.18.0.1.0
Global metadata cacheNot supported2.0.14.8.11.0Not supportedNot supportedNot supportedNot supportedNot supported
Optimizer
Cost-based query transformation (CBQT)2.0.11.15.44.02.0.14.13.28.0Not supportedNot supportedNot supportedNot supportedNot supported
Convert OR clauses to UNION ALLNot supported2.0.14.13.27.0Not supportedNot supportedNot supportedNot supportedNot supported
Statement outlineNot supported2.0.14.13.28.0Not supportedNot supported2.0.16.9.9.0Not supportedNot supportedNot supportedNot supported
Subquery pushdown2.0.11.15.44.02.0.14.13.28.0Not supportedNot supportedNot supportedNot supportedNot supported
Correlated subquery pull-upNot supported2.0.14.8.11.0Not supportedNot supportedNot supportedSupportedSupportedNot supported
Partitioned tables
Global indexesNot supported2.0.14.9.15.0Not supportedNot supportedNot supportedNot supportedNot supported
Partitioned tables support any column as primary keyNot supported2.0.14.10.17.0Not supportedNot supportedNot supportedNot supportedNot supported
Partitioned table scan operatorsNot supported2.0.14.9.15.0Not supportedNot supportedNot supportedNot supportedNot supported
Resource management
Multi-tenantNot supported2.0.14.12.24.0Not supportedNot supportedNot supportedNot supported
Resource Manager2.0.11.2.1.02.0.14.5.1.02.0.15.7.2.02.0.16.3.1.12.0.17.2.1.02.0.18.0.1.0
Storage cost
Tiered storage for cold dataNot supported2.0.14.10.21.0Not supportedNot supportedNot supported2.0.16.9.6.0Not supportedNot supported
Storage performance
Prefetching and pre-extension2.0.11.2.0.02.0.14.5.1.02.0.15.12.4.02.0.16.6.2.02.0.17.2.1.02.0.18.0.1.0
Create or refresh materialized views with batch writes2.0.11.15.37.02.0.14.9.15.0 to 2.0.14.13.27.0Not supportedNot supportedNot supportedNot supported
Multi-insert table AM infrastructureNot supported2.0.14.13.28.02.0.15.12.4.02.0.16.8.3.02.0.17.2.2.1Not supported
Batch import infrastructureNot supported2.0.14.13.28.02.0.15.12.4.02.0.16.6.2.02.0.17.2.1.02.0.18.0.1.0
Table size cache (RSC)Not supported2.0.14.12.23.12.0.15.7.1.12.0.16.3.1.12.0.17.2.1.02.0.18.0.1.0
Physical and logical replication reads WAL logs from WAL bufferNot supported2.0.14.13.27.02.0.15.12.4.02.0.16.6.2.02.0.17.2.1.02.0.18.0.1.0
Other
Flashback drop2.0.11.9.30.02.0.14.9.15.0Not supportedNot supportedNot supportedNot supportedNot supported
Flashback table2.0.11.9.22.0Not supportedNot supportedNot supportedNot supportedNot supportedNot supported