## 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) $