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@ -8,7 +8,7 @@ |
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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: Wed Apr 4 22:08:46 EDT 2007 |
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Last updated: Fri Apr 6 22:48:08 EDT 2007 |
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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>. |
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@ -1273,14 +1273,7 @@ first. There is also a developer's wiki at<br/> |
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</li><li>-<em>Merge xmin/xmax/cmin/cmax back into three header fields</em> |
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</li><li>Consider ways of storing rows more compactly on disk |
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<ul> |
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<li>Support a smaller header for short variable-length fields? |
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<p> One idea is to create zero-or-one-byte-header versions |
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of varlena data types. In involves setting the high-bit and |
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0-127 length in the single-byte header, or clear the high bit |
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and store the 7-bit ASCII value in the rest of the byte. |
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The small-header versions have no alignment requirements. |
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<a href="http://archives.postgresql.org/pgsql-hackers/2006-09/msg01372.php">http://archives.postgresql.org/pgsql-hackers/2006-09/msg01372.php</a> |
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</p> |
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<li>-<em>Support a smaller header for short variable-length fields</em> |
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</li><li>Reduce the row header size? |
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</li><li>Consider reducing on-disk varlena length from four to two |
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because a heap row cannot be more than 64k in length |
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Bruce Momjian
19 years ago