[GRASS-SVN] r34504 - grass/trunk/db/base

[svn_grass at osgeo.org]

Author: neteler
Date: 2008-11-26 14:30:47 -0500 (Wed, 26 Nov 2008)
New Revision: 34504

Modified:
   grass/trunk/db/base/db.execute.html
Log:
table join example added

Modified: grass/trunk/db/base/db.execute.html
===================================================================
--- grass/trunk/db/base/db.execute.html	2008-11-26 17:04:40 UTC (rev 34503)
+++ grass/trunk/db/base/db.execute.html	2008-11-26 19:30:47 UTC (rev 34504)
@@ -92,6 +92,12 @@
 cat file.sql | db.execute
 </pre></div>
 
+<P>
+<em>Join table 'myroads' into table 'extratab' based on common 'cat' column values (not supported by DBF driver):<br>
+<div class="code"><pre>
+echo "UPDATE extratab SET names=(SELECT label FROM myroads WHERE extratab.cat=myroads.cat);" | db.execute
+</pre></div>
+
 <h2>SEE ALSO</h2>
 <em><a HREF="db.columns.html">db.columns</a>,
 <a HREF="db.describe.html">db.describe</a>,