mirrors/postgres
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Add:

Browse Source 
> * Consider using hash buckets to do DISTINCT, rather than sorting
>
>   This would be beneficial when there are few distinct values.
This commit is contained in:
Bruce Momjian 2004-09-02 01:18:46 +00:00
parent bf831f6e9f
commit c58eb2dd7b
1 changed files with 4 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
doc/TODO
View File

@ -5,7 +5,7 @@ TODO list for PostgreSQL
Bracketed items "[]" have more detail.
Current maintainer: Bruce Momjian (pgman@candle.pha.pa.us)
Last updated: Mon Aug 30 12:08:12 EDT 2004
Last updated: Wed Sep 1 21:18:44 EDT 2004
The most recent version of this document can be viewed at the PostgreSQL web site, http://www.PostgreSQL.org.
@ -802,6 +802,9 @@ Optimizer / Executor
CHECK constraints contain information about the distribution of values
within the table. This is also useful for implementing subtables where
a tables content is distributed across several subtables.
* Consider using hash buckets to do DISTINCT, rather than sorting
This would be beneficial when there are few distinct values.
Miscellaneous