Update:

bmomjian · bmomjian · commit ab13353d311e · 2005-10-07T14:04:19.000Z
&lt; * Consider compressing indexes by storing key prefix values shared by
&gt; * Consider compressing indexes by storing key values duplicated in
735a736,737
&gt;
&gt;   This is difficult because it requires datatype-specific knowledge.
diff --git a/doc/TODO b/doc/TODO
@@ -2,7 +2,7 @@
 PostgreSQL TODO List
 ====================
 Current maintainer:	Bruce Momjian (pgman@candle.pha.pa.us)
-Last updated:		Thu Oct  6 22:43:58 EDT 2005
+Last updated:		Fri Oct  7 10:04:19 EDT 2005
 
 The most recent version of this document can be viewed at
 http://www.postgresql.org/docs/faqs.TODO.html.
@@ -731,9 +731,11 @@ Indexes
   it to be used for all queries with little performance impact
 * Allow CREATE INDEX to take an additional parameter for use with
   special index types
-* Consider compressing indexes by storing key prefix values shared by
+* Consider compressing indexes by storing key values duplicated in
   several rows as a single index entry
 
+  This is difficult because it requires datatype-specific knowledge.
+
 
 * GIST
 
diff --git a/doc/src/FAQ/TODO.html b/doc/src/FAQ/TODO.html
@@ -8,7 +8,7 @@
 <body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
 <h1><a name="section_1">PostgreSQL TODO List</a></h1>
 <p>Current maintainer:     Bruce Momjian (<a href="mailto:pgman@candle.pha.pa.us">pgman@candle.pha.pa.us</a>)<br/>
-Last updated:           Thu Oct  6 22:43:58 EDT 2005
+Last updated:           Fri Oct  7 10:04:19 EDT 2005
 </p>
 <p>The most recent version of this document can be viewed at<br/>
 <a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
@@ -666,8 +666,10 @@ <h1><a name="section_13">Indexes</a></h1>
   it to be used for all queries with little performance impact
   </li><li>Allow CREATE INDEX to take an additional parameter for use with
   special index types
-  </li><li>Consider compressing indexes by storing key prefix values shared by
+  </li><li>Consider compressing indexes by storing key values duplicated in
   several rows as a single index entry
+<p>  This is difficult because it requires datatype-specific knowledge.
+</p>
   </li><li>GIST
   <ul>
     <li>Add more GIST index support for geometric data types
