<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>GRASS GIS: v.db.addtable</title> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <link rel="stylesheet" href="grassdocs.css" type="text/css"> </head> <body bgcolor="white"> <img src="grass_logo.png" alt="GRASS logo"><hr align=center size=6 noshade> <h2>NAME</h2> <em><b>v.db.addtable</b></em> - Creates and adds a new attribute table to a given layer of an existing vector map. <h2>KEYWORDS</h2> vector, database, attribute table <h2>SYNOPSIS</h2> <b>v.db.addtable</b><br> <b>v.db.addtable help</b><br> <b>v.db.addtable</b> <b>map</b>=<em>name</em> [<b>table</b>=<em>string</em>] [<b>layer</b>=<em>integer</em>] [<b>columns</b>=<em>name type</em>[,<i>name type</i>,...]] [--<b>verbose</b>] [--<b>quiet</b>] <h3>Parameters:</h3> <DL> <DT><b>map</b>=<em>name</em></DT> <DD>Vector map for which to add new attribute table</DD> <DT><b>table</b>=<em>string</em></DT> <DD>Name of new attribute table (default: vector map name)</DD> <DT><b>layer</b>=<em>integer</em></DT> <DD>Layer where to add new attribute table</DD> <DD>Default: <em>1</em></DD> <DT><b>columns</b>=<em>name type[,<i>name type</i>,...]</em></DT> <DD>Name and type of the new column(s) (types depend on database backend, but all support VARCHAR(), INT, DOUBLE and DATE)</DD> <DD>Default: <em>cat integer</em></DD> </DL> <h2>DESCRIPTION</h2> <em>v.db.addtable</em> creates and adds a new attribute table to a given vector map. It links the table to the specified layer of the vector map. If the vector map is not yet linked to any table, new a database link is established based on the MAPSET database settings (see <em>db.connect</em>). <h2>NOTES</h2> <em>v.db.addtable</em> is a front-end to <em>db.execute</em> to allow easier usage. The supported types of columns depend on the database backend. However, all backends should support VARCHAR, INT, DOUBLE and DATE. The default dbf backend supports only these types. The existing database connection(s) can be verified with <em>v.db.connect</em>. <h2>EXAMPLE</h2> Adding a new attribute table with a single column to default layer 1:<br> <div class="code"><pre> v.db.addtable sentiero_brenta_points columns="slope double" v.db.connect -p sentiero_brenta_points v.info -c sentiero_brenta_points </pre></div> <p> Adding a new attribute table with two columns to layer 2:<br> <div class="code"><pre> v.db.addtable sentiero_brenta_points columns="slope double,myname varchar(15)" layer=2 v.db.connect -p sentiero_brenta_points v.info -c sentiero_brenta_points </pre></div> <h2>SEE ALSO</h2> <em><a HREF="db.connect.html">db.connect</a></em>, <em><a HREF="db.execute.html">db.execute</a></em>, <em><a HREF="v.db.addcol.html">v.db.addcol</a></em>, <em><a HREF="v.db.connect.html">v.db.connect</a></em>, <em><a HREF="v.db.dropcol.html">v.db.dropcol</a></em>, <em><a HREF="v.db.droptable.html">v.db.droptable</a></em>, <em><a HREF="v.db.select.html">v.db.select</a></em>, <em><a HREF="v.db.update.html">v.db.update</a></em><br> <em><a href="sql.html">GRASS SQL interface</a></em> <h2>AUTHOR</h2> Markus Neteler <p><i>Last changed: $Date: 2007-05-07 17:59:55 +0200 (Mon, 07 May 2007) $</i> <HR> <P><a href="index.html">Main index</a> - <a href="vector.html">vector index</a> - <a href="full_index.html">Full index</a></P> <P>© 2003-2008 <a href="http://grass.osgeo.org">GRASS Development Team</a></p> </body> </html>
