ОПИСАНИЕ

db.dropcol 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.

ПРИМЕЧАНИЯ

db.dropcol is a front-end to db.execute to allow easier usage with a special workaround for the SQLite driver to support column drop.

ПРИМЕРЫ

Dropping a column (Spearfish): 

# work on own copy
g.copy vect=roads,myroads
db.describe -c myroads

# only shows what would happen:
db.dropcol myroads column=label

# actually drops the column
db.dropcol -f myroads column=label

db.describe -c myroads

СМ. ТАКЖЕ

db.execute, v.db.dropcol

АВТОР

Markus Neteler

Last changed: $Date: 2007-07-14 05:59:51 -0500 (Сб, 14 июл 2007) $

Автор перевода