
NAME
v.db.dropcolumn - Drops a column from the attribute table connected to a given vector map.
KEYWORDS
vector, database, attribute table
SYNOPSIS
v.db.dropcolumn
v.db.dropcolumn help
v.db.dropcolumn map=name [layer=integer] column=string [--verbose] [--quiet]
Parameters:
- map=name
- Vector map for which to drop attribute column
- layer=integer
- Layer where to drop column
- Default: 1
- column=string
- Name of the column to drop
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:
v.db.dropcolumn sentiero_brenta_points column=slope
v.info -c sentiero_brenta_points
SEE ALSO
db.droptable,
db.execute,
v.db.addcolumn,
v.db.addtable,
v.db.connect,
v.db.droptable,
v.db.select,
v.db.update
AUTHOR
Markus Neteler
Last changed: $Date: 2011-01-14 14:11:41 -0800 (Fri, 14 Jan 2011) $
Main index - vector index - Full index
© 2003-2011 GRASS Development Team