1. Performance enhancements 

 

PostgreSQL is renowned for its performance, and version 14 takes it to the next level with several key optimizations: 

 

• Faster partitioned tables: Enjoy improved performance for partitioned tables thanks to enhanced execution-time pruning, which generates a single sub-plan instead of multiple ones. 
• Parallel foreign table scans: Speed up queries that involve foreign data wrappers with support for parallel scans. 

 

2. New data types 

 

PostgreSQL 14 also introduces a handy new data type to make working with complex data structures a breeze. Building on the existing range type, the multirange type allows you to store an ordered list of discontinuous ranges, providing more flexibility for representing complex data patterns. 

 

 

3. Improved management functionality 

 

Managing your PostgreSQL database is now even easier with several new parameters designed to enhance control and efficiency. Fine-tune your database connections with new parameters related to idle sessions, long-running queries, and session timeouts. 

 

 

 

4. Additional security features 

 

As always, security is paramount. PostgreSQL 14 adds some welcome enhancements to help you safeguard your data: the new predefined roles make it easier to grant and control access privileges. 

 

 

5. Enhanced monitoring 

 

Understanding what’s happening under the hood is crucial for optimizing your database performance. In PostgreSQL 14, each query now receives a unique identifier, making it easier to track and monitor individual queries and gain deeper insights into database activity. 

 

 

 

6. Improved logical replication 

 

PostgreSQL 14 continues to enhance its logical replication capabilities, making it an even more robust and efficient solution for data replication: 

 

• Reduced replication lag: Minimize replication lag for large transactions by optimizing the apply process. 
• Decoding of DDL transactions: Enhance the reliability of logical replication by decoding transactions that include Data Definition Language (DDL) statements, ensuring conflict-free replication.

 

 

7. Streamlined SQL features 

 

PostgreSQL 14 introduces a new feature to improve the efficiency of query execution. You can now send multiple queries in pipeline mode, allowing them to execute more efficiently without waiting for each individual query to complete. 

 

 

 

8. Data corruption detection 

 

The latest version of PostgreSQL also adds a new tool to help you identify and address data corruption issues early on, preventing data loss and ensuring database integrity. 

 

 

 

9. More efficient indexes 

 

PostgreSQL 14 further enhances its indexing capabilities, leading to faster query execution and reduced storage overhead: 

 

• B-tree index improvements: Additions to B-tree indexes can now remove expired entries and prevent page splits, leading to more compact and efficient indexes. 
• Partitioned table subindex support: The REINDEX command now supports re-indexing subindexes of partitioned tables, making index maintenance more efficient. 

 

 

 

10. Enhanced statistics 

 

In PostgreSQL 14, you can gather more detailed statistics for queries that involve expressions. This allows the query planner to create more efficient query plans and improve overall performance. 

 

 

 

11. Efficient vacuuming 

 

Vacuuming is an essential maintenance task in PostgreSQL, and version 14, you can enjoy faster and more efficient vacuuming for partitioned tables, with statistics now associated with the parent table for improved optimization. 

 

 

… and much more! 

These are just a few highlights of the many enhancements and new features in PostgreSQL 14. From minor bug fixes to significant performance optimizations, this release is a testament to the continuous evolution and innovation of the PostgreSQL community.