## DESCRIPTION

v.db.addcol adds one or more column(s) to the attribute table connected to a given vector map. It automatically checks the connection for the specified layer.

## NOTES

v.db.addcol is a front-end to db.execute to allow easier usage. The supported types of columns depend on the database backend. However, all backends should support VARCHAR, INT, DOUBLE PRECISION and DATE. The default dbf backend supports only these types. The existing database connection(s) can be verified with v.db.connect.

## EXAMPLES

Adding a single column:

    v.db.addcol sentiero_brenta_points columns="slope double precision"
    v.info -c sentiero_brenta_points

Adding two columns:

    v.db.addcol sentiero_brenta_points columns="slope double precision,myname varchar(15)"
    v.info -c sentiero_brenta_points

## SEE ALSO

db.execute, v.db.addtable, v.db.connect, v.db.dropcol, v.db.droptable, v.db.select, v.db.update,
GRASS SQL interface

## AUTHOR

Moritz Lennert (mlennert@club.worldonline.be)

Last changed: $Date: 2010-03-21 09:19:18 -0800 (Sun, 21 Mar 2010) $