Commit 1b9b1d18 authored by Pietro Abate's avatar Pietro Abate
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[r2004-07-03 12:05:13 by beppe] Empty log message

Original author: beppe
Date: 2004-07-03 12:06:44+00:00
parent c16f9a88
...@@ -682,9 +682,10 @@ expression, the <code>%%pi%%</code>'s are patterns, and the ...@@ -682,9 +682,10 @@ expression, the <code>%%pi%%</code>'s are patterns, and the
</p> </p>
<p> <p>
A <code>select</code> expression works like a set of nested A <code>select</code> expression works like a set of nested
<code>transform</code> expressions. The advantage of using selections is that <code>transform</code> expressions. The advantage of using select rather than
these queries are automatically optimized by applying classical logic SQL query transform is that queries are automatically optimized by applying classical
optimizations techniques (automatic optimization can be disabled). logic SQL optimization techniques (this automatic optimization can be
disabled).
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</box> </box>
</page> </page>
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