File tree Expand file tree Collapse file tree 2 files changed +4
-2
lines changed Expand file tree Collapse file tree 2 files changed +4
-2
lines changed Original file line number Diff line number Diff line change 2
2
PostgreSQL TODO List
3
3
====================
4
4
Current maintainer: Bruce Momjian (bruce@momjian.us)
5
- Last updated: Sat Oct 21 13:31:12 EDT 2006
5
+ Last updated: Mon Oct 23 22:41:16 EDT 2006
6
6
7
7
The most recent version of this document can be viewed at
8
8
http://www.postgresql.org/docs/faqs.TODO.html.
@@ -960,6 +960,7 @@ Cache Usage
960
960
get a count directly from a unique index, but for this to be
961
961
faster than a sequential scan it must avoid access to the heap
962
962
to obtain tuple visibility information.
963
+ http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php
963
964
964
965
* Add estimated_count(*) to return an estimate of COUNT(*)
965
966
Original file line number Diff line number Diff line change 8
8
< body bgcolor ="#FFFFFF " text ="#000000 " link ="#FF0000 " vlink ="#A00000 " alink ="#0000FF ">
9
9
< h1 > < a name ="section_1 "> PostgreSQL TODO List</ a > </ h1 >
10
10
< p > Current maintainer: Bruce Momjian (< a href ="mailto:bruce@momjian.us "> bruce@momjian.us</ a > )< br />
11
- Last updated: Sat Oct 21 13:31:12 EDT 2006
11
+ Last updated: Mon Oct 23 22:41:16 EDT 2006
12
12
</ p >
13
13
< p > The most recent version of this document can be viewed at< br />
14
14
< a href ="http://www.postgresql.org/docs/faqs.TODO.html "> http://www.postgresql.org/docs/faqs.TODO.html</ a > .
@@ -867,6 +867,7 @@ <h1><a name="section_14">Cache Usage</a></h1>
867
867
get a count directly from a unique index, but for this to be
868
868
faster than a sequential scan it must avoid access to the heap
869
869
to obtain tuple visibility information.
870
+ < a href ="http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php "> http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php</ a >
870
871
</ p >
871
872
</ li > < li > Add estimated_count(*) to return an estimate of COUNT(*)
872
873
< p > This would use the planner ANALYZE statistics to return an estimated
You can’t perform that action at this time.
0 commit comments