DESCRIPTION
db.dropcolumn drops a column from an attribute table.
If the -f force flag is not given then nothing is removed, instead
a preview of the action to be taken is printed.
NOTES
db.dropcolumn is a front-end to db.execute to allow easier
usage with a special workaround for the SQLite driver to support column
drop also for SQLite tables.
EXAMPLE
Dropping a column (North Carolina sample dataset):
# work on own copy
g.copy vect=roadsmajor,myroads
db.describe -c myroads
# only shows what would happen:
db.dropcolumn myroads column=SHAPE_LEN
# actually drops the column
db.dropcolumn -f myroads column=SHAPE_LEN
db.describe -c myroads
SEE ALSO
db.describe,
db.droptable,
db.execute,
v.db.dropcolumn,
GRASS SQL interface
AUTHOR
Markus Neteler
Last changed: $Date: 2011-11-08 22:24:20 +0100 (Tue, 08 Nov 2011) $