Appendix E. Release Notes

Table of Contents
E.1. Release 7.4.22
E.2. Release 7.4.21
E.3. Release 7.4.20
E.4. Release 7.4.19
E.5. Release 7.4.18
E.6. Release 7.4.17
E.7. Release 7.4.16
E.8. Release 7.4.15
E.9. Release 7.4.14
E.10. Release 7.4.13
E.11. Release 7.4.12
E.12. Release 7.4.11
E.13. Release 7.4.10
E.14. Release 7.4.9
E.15. Release 7.4.8
E.16. Release 7.4.7
E.17. Release 7.4.6
E.18. Release 7.4.5
E.19. Release 7.4.4
E.20. Release 7.4.3
E.21. Release 7.4.2
E.22. Release 7.4.1
E.23. Release 7.4
E.24. Release 7.3.21
E.25. Release 7.3.20
E.26. Release 7.3.19
E.27. Release 7.3.18
E.28. Release 7.3.17
E.29. Release 7.3.16
E.30. Release 7.3.15
E.31. Release 7.3.14
E.32. Release 7.3.13
E.33. Release 7.3.12
E.34. Release 7.3.11
E.35. Release 7.3.10
E.36. Release 7.3.9
E.37. Release 7.3.8
E.38. Release 7.3.7
E.39. Release 7.3.6
E.40. Release 7.3.5
E.41. Release 7.3.4
E.42. Release 7.3.3
E.43. Release 7.3.2
E.44. Release 7.3.1
E.45. Release 7.3
E.46. Release 7.2.8
E.47. Release 7.2.7
E.48. Release 7.2.6
E.49. Release 7.2.5
E.50. Release 7.2.4
E.51. Release 7.2.3
E.52. Release 7.2.2
E.53. Release 7.2.1
E.54. Release 7.2
E.55. Release 7.1.3
E.56. Release 7.1.2
E.57. Release 7.1.1
E.58. Release 7.1
E.59. Release 7.0.3
E.60. Release 7.0.2
E.61. Release 7.0.1
E.62. Release 7.0
E.63. Release 6.5.3
E.64. Release 6.5.2
E.65. Release 6.5.1
E.66. Release 6.5
E.67. Release 6.4.2
E.68. Release 6.4.1
E.69. Release 6.4
E.70. Release 6.3.2
E.71. Release 6.3.1
E.72. Release 6.3
E.73. Release 6.2.1
E.74. Release 6.2
E.75. Release 6.1.1
E.76. Release 6.1
E.77. Release 6.0
E.78. Release 1.09
E.79. Release 1.02
E.80. Release 1.01
E.81. Release 1.0
E.82. Postgres95 Release 0.03
E.83. Postgres95 Release 0.02
E.84. Postgres95 Release 0.01

The release notes contain the significant changes in each PostgreSQL release, with major features and migration issues listed at the top. The release notes do not contain changes that affect only a few users or changes that are internal and therefore not user-visible. For example, the optimizer is improved in almost every release, but the improvements are usually observed by users as simply faster queries.

A complete list of changes for each release can be obtained by viewing the CVS logs for each release. The pgsql-committers email list contains all source code changes as well. There is also a web interface that shows changes to specific files.

The name appearing next to each item represents the major developer for that item. Of course all changes involve community discussion and patch review, so each item is truly a community effort.

E.1. Release 7.4.22

Release date: 2008-09-22

This release contains a variety of fixes from 7.4.21. For information about new features in the 7.4 major release, see Section E.23.

E.1.1. Migration to Version 7.4.22

A dump/restore is not required for those running 7.4.X. However, if you are upgrading from a version earlier than 7.4.11, see the release notes for 7.4.11.

E.1.2. Changes

  • Fix datetime input functions to correctly detect integer overflow when running on a 64-bit platform (Tom)

  • Improve performance of writing very long log messages to syslog (Tom)

  • Fix bug in backwards scanning of a cursor on a SELECT DISTINCT ON query (Tom)

  • Fix planner to estimate that GROUP BY expressions yielding boolean results always result in two groups, regardless of the expressions' contents (Tom)

    This is very substantially more accurate than the regular GROUP BY estimate for certain boolean tests like col IS NULL.

  • Improve pg_dump and pg_restore's error reporting after failure to send a SQL command (Tom)