GRASS GIS manual: v.db.dropcolumn

Note: A new GRASS GIS stable version has been released: GRASS GIS 7.6, available here.
Updated manual page: here

NAME

v.db.dropcolumn - Drops a column from the attribute table connected to a given vector map.

KEYWORDS

vector, attribute table, database

SYNOPSIS

v.db.dropcolumn

v.db.dropcolumn --help

v.db.dropcolumn map=name [layer=string] columns=name[,name,...] [--help] [--verbose] [--quiet] [--ui]

Flags:

--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

map=name [required]: Name of vector map; Or data source for direct OGR access
layer=string: Layer number or name; Vector features can have category values in different layers. This number determines which layer to use. When used with direct OGR access this is the layer name.; Default: 1
columns=name[,name,...] [required]: Name of attribute column(s) to drop

DESCRIPTION
NOTES
EXAMPLES
SEE ALSO
AUTHOR

DESCRIPTION

v.db.dropcolumn drops a column from the attribute table connected to a given vector map. It automatically checks the connection for the specified layer. v.db.dropcolumn omits to delete the 'cat' column which is relevant to keep the connection between vector map and table.

NOTES

v.db.dropcolumn is a front-end to db.execute to allow easier usage.

The existing database connection(s) can be verified with v.db.connect.

EXAMPLES

Dropping a column:

g.copy vect=roadsmajor,myroads
v.info -c myroads
v.db.dropcolumn myroads column=SHAPE_LEN
v.info -c myroads

AUTHOR

Markus Neteler

Last changed: $Date: 2011-11-08 13:24:20 -0800 (Tue, 08 Nov 2011) $

SOURCE CODE

Available at: v.db.dropcolumn source code (history)