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| author | Bruce Momjian <bruce@momjian.us> | 2003-10-29 20:38:19 +0000 |
|---|---|---|
| committer | Bruce Momjian <bruce@momjian.us> | 2003-10-29 20:38:19 +0000 |
| commit | 1a2be80ee7e361da6887b03359135fb03e520550 (patch) | |
| tree | 8db44c05f54c3c674ff6369fc7de0d7c019e0404 /doc/src | |
| parent | a00d6b23ebc27d66a090554e2e8c95fb0c26b9e6 (diff) | |
| download | postgresql-1a2be80ee7e361da6887b03359135fb03e520550.tar.gz postgresql-1a2be80ee7e361da6887b03359135fb03e520550.zip | |
Add first release note detail item.
Diffstat (limited to 'doc/src')
| -rw-r--r-- | doc/src/sgml/release.sgml | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/doc/src/sgml/release.sgml b/doc/src/sgml/release.sgml index 91439c17f1e..afd5f8ffb3f 100644 --- a/doc/src/sgml/release.sgml +++ b/doc/src/sgml/release.sgml @@ -1,5 +1,5 @@ <!-- -$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.218 2003/10/27 02:51:39 momjian Exp $ +$Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.219 2003/10/29 20:38:19 momjian Exp $ --> <appendix id="release"> @@ -15,6 +15,15 @@ $Header: /cvsroot/pgsql/doc/src/sgml/release.sgml,v 1.218 2003/10/27 02:51:39 mo <glossentry><glossterm> Performance</glossterm> <glossdef><para> IN/NOT IN subqueries are now much more efficient + <footnote> + <para> + In previous releases, IN/NOT IN subqueries were joined to the + upper query by sequentially scanning the subquery looking for + a join. The 7.4 code uses the same sophisticated techniques + used by ordinary joins and so is much faster, and is now faster + than EXISTS subqueries. + </para> + </footnote> </para> <para> Improved GROUP BY processing by using hash buckets</para> |