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PostgreSQL 15 Beta 1 新特性与测试示例 (EN) .pdf
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© 2021-2022 Hewlett Packard Enterprise Japan Co, Ltd.
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May 24, 2022
PostgreSQL 15 New Features
With Examples (Beta 1)
Hewlett Packard Enterprise Japan Co, Ltd.
Noriyoshi Shinoda
© 2021-2022 Hewlett Packard Enterprise Japan Co, Ltd.
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Index
Index ........................................................................................................................................ 2
1. About This Document ............................................................................................................ 5
1.1. Purpose .......................................................................................................................... 5
1.2. Audience ........................................................................................................................ 5
1.3. Scope ............................................................................................................................. 5
1.4. Software Version ............................................................................................................. 5
1.5. The Question, comment, and Responsibility ...................................................................... 6
1.6. Notation ......................................................................................................................... 6
2. New Features Summary ......................................................................................................... 8
2.1. Improvements to adapt to large scale environments ........................................................... 8
2.2. Improve reliability .......................................................................................................... 8
2.3. Improved maintainability ................................................................................................. 9
2.4. Improved in Programming ............................................................................................... 9
2.5. Preparing for future new features.................................................................................... 10
2.6. Incompatibility .............................................................................................................. 11
2.6.1. Access privileges to the PUBLIC schema .................................................................. 11
2.6.2. Exclusive backup mode ............................................................................................ 11
2.6.3. Psql ....................................................................................................................... 12
2.6.4. Literal .................................................................................................................... 13
2.6.5. ANALYZE ............................................................................................................. 14
2.6.6. Python 2................................................................................................................. 14
2.6.7. Date_bin ................................................................................................................ 14
2.6.8. Pg_amcheck ........................................................................................................... 15
2.6.9. Pgcrypto ................................................................................................................ 15
2.6.10. Pg_dump / pg_dumpall.......................................................................................... 15
2.6.11. Pg_upgrade .......................................................................................................... 15
2.6.12. Postmaster ............................................................................................................ 15
2.6.13. Array_to_tsvector ................................................................................................. 15
2.6.14. Xml2 ................................................................................................................... 16
3. New Feature Detail .............................................................................................................. 17
3.1. Architecture .................................................................................................................. 17
3.1.1. Modified System catalogs ....................................................................................... 17
3.1.2. Logical Replication Enhancements........................................................................... 22
3.1.3. Parallel Query Enhancements .................................................................................. 26
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