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> * Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS [exists]
This commit is contained in:
Bruce Momjian 2002-01-20 04:56:14 +00:00
parent 0363192c69
commit e0764fdf28
1 changed files with 3 additions and 2 deletions
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@ -1,6 +1,6 @@
TODO list for PostgreSQL TODO list for PostgreSQL
======================== ========================
Last updated: Fri Jan 18 15:46:23 EST 2002 Last updated: Sat Jan 19 23:56:04 EST 2002
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us) Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
@ -375,7 +375,7 @@ VACUUM
MISCELLANEOUS MISCELLANEOUS
* -Allow compression of log and meta data (Tom) * -Allow compression of log and meta data (Tom)
* Do async I/O to do better read-ahead of data * Do async I/O for faster random read-ahead of data
* Experiment with multi-threaded backend [thread] * Experiment with multi-threaded backend [thread]
* Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca> * Get faster regex() code from Henry Spencer <henry@zoo.utoronto.ca>
when it is available when it is available
@ -408,6 +408,7 @@ MISCELLANEOUS
evaluated only once or once per query evaluated only once or once per query
* Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce) * Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce)
* Make locking of shared data structures more fine-grained * Make locking of shared data structures more fine-grained
* Make IN/NOT IN have similar performance to EXISTS/NOT EXISTS [exists]
SOURCE CODE SOURCE CODE
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