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PostgreSQL TODO List
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====================
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Current maintainer: Bruce Momjian (bruce@momjian.us)
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- Last updated: Mon Oct 23 22:41:16 EDT 2006
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+ Last updated: Mon Oct 23 22:42:19 EDT 2006
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The most recent version of this document can be viewed at
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http://www.postgresql.org/docs/faqs.TODO.html.
@@ -960,12 +960,12 @@ Cache Usage
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get a count directly from a unique index, but for this to be
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faster than a sequential scan it must avoid access to the heap
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to obtain tuple visibility information.
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- http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php
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* Add estimated_count(*) to return an estimate of COUNT(*)
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This would use the planner ANALYZE statistics to return an estimated
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count.
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+ http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php
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* Allow data to be pulled directly from indexes
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< body bgcolor ="#FFFFFF " text ="#000000 " link ="#FF0000 " vlink ="#A00000 " alink ="#0000FF ">
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< h1 > < a name ="section_1 "> PostgreSQL TODO List</ a > </ h1 >
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< p > Current maintainer: Bruce Momjian (< a href ="mailto:bruce@momjian.us "> bruce@momjian.us</ a > )< br />
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- Last updated: Mon Oct 23 22:41:16 EDT 2006
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+ Last updated: Mon Oct 23 22:42:19 EDT 2006
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</ p >
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< p > The most recent version of this document can be viewed at< br />
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< a href ="http://www.postgresql.org/docs/faqs.TODO.html "> http://www.postgresql.org/docs/faqs.TODO.html</ a > .
@@ -867,11 +867,11 @@ <h1><a name="section_14">Cache Usage</a></h1>
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get a count directly from a unique index, but for this to be
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faster than a sequential scan it must avoid access to the heap
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to obtain tuple visibility information.
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- < a href ="http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php "> http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php</ a >
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</ p >
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</ li > < li > Add estimated_count(*) to return an estimate of COUNT(*)
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< p > This would use the planner ANALYZE statistics to return an estimated
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count.
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+ < a href ="http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php "> http://archives.postgresql.org/pgsql-hackers/2005-11/msg00943.php</ a >
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</ p >
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</ li > < li > Allow data to be pulled directly from indexes
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< p > Currently indexes do not have enough tuple visibility information
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