Fix typo:

< Currently indexes do not have enough tuple tuple visibility < information to allow data to be pulled from the index without < also accessing the heap. One way to allow this is to set a bit < to index tuples to indicate if a tuple is currently visible to < all transactions when the first valid heap lookup happens. This < bit would have to be cleared when a heap tuple is expired. > Currently indexes do not have enough tuple visibility information > to allow data to be pulled from the index without also accessing > the heap. One way to allow this is to set a bit to index tuples > to indicate if a tuple is currently visible to all transactions > when the first valid heap lookup happens. This bit would have to > be cleared when a heap tuple is expired.

Fix typo:
< Currently indexes do not have enough tuple tuple visibility < information to allow data to be pulled from the index without < also accessing the heap. One way to allow this is to set a bit < to index tuples to indicate if a tuple is currently visible to < all transactions when the first valid heap lookup happens. This < bit would have to be cleared when a heap tuple is expired. > Currently indexes do not have enough tuple visibility information > to allow data to be pulled from the index without also accessing > the heap. One way to allow this is to set a bit to index tuples > to indicate if a tuple is currently visible to all transactions > when the first valid heap lookup happens. This bit would have to > be cleared when a heap tuple is expired.
ccbb07d9 · Bruce Momjian · 6f61ddd4 · ccbb07d9 · ccbb07d9
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Showing with 14 addition and 14 deletion

doc/TODO doc/TODO +7 -7

doc/src/FAQ/TODO.html doc/src/FAQ/TODO.html +7 -7

未找到文件。
--- a/doc/TODO
+++ b/doc/TODO
@@ -2,7 +2,7 @@
 PostgreSQL TODO List
 ====================
 Current maintainer:	Bruce Momjian (pgman@candle.pha.pa.us)
-Last updated:		Fri Apr 22 09:38:10 EDT 2005
+Last updated:		Fri Apr 22 11:40:08 EDT 2005

 The most recent version of this document can be viewed at
 http://www.postgresql.org/docs/faqs.TODO.html.
@@ -714,12 +714,12 @@ Cache

 * Allow data to be pulled directly from indexes

-  Currently indexes do not have enough tuple tuple visibility
-  information to allow data to be pulled from the index without
-  also accessing the heap.  One way to allow this is to set a bit
-  to index tuples to indicate if a tuple is currently visible to
-  all transactions when the first valid heap lookup happens.  This 
-  bit would have to be cleared when a heap tuple is expired.
+  Currently indexes do not have enough tuple visibility information 
+  to allow data to be pulled from the index without also accessing 
+  the heap.  One way to allow this is to set a bit to index tuples 
+  to indicate if a tuple is currently visible to all transactions 
+  when the first valid heap lookup happens.  This bit would have to 
+  be cleared when a heap tuple is expired.

 * Consider automatic caching of queries at various levels:
 	o Parsed query tree

--- 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:           Fri Apr 22 09:38:10 EDT 2005
+Last updated:           Fri Apr 22 11:40:08 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>.
@@ -653,12 +653,12 @@ first.
  to obtain tuple visibility information.
 </p>
  </li><li>Allow data to be pulled directly from indexes
-<p>  Currently indexes do not have enough tuple tuple visibility
-  information to allow data to be pulled from the index without
-  also accessing the heap.  One way to allow this is to set a bit
-  to index tuples to indicate if a tuple is currently visible to
-  all transactions when the first valid heap lookup happens.  This 
-  bit would have to be cleared when a heap tuple is expired.
+<p>  Currently indexes do not have enough tuple visibility information 
+  to allow data to be pulled from the index without also accessing 
+  the heap.  One way to allow this is to set a bit to index tuples 
+  to indicate if a tuple is currently visible to all transactions 
+  when the first valid heap lookup happens.  This bit would have to 
+  be cleared when a heap tuple is expired.
 </p>
  </li><li>Consider automatic caching of queries at various levels:
  <ul>