v.db.dropcolumn(1grass) | GRASS GIS User's Manual | v.db.dropcolumn(1grass) |
v.db.dropcolumn - Drops a column from the attribute table connected to a given vector map.
vector, attribute table, database
v.db.dropcolumn
v.db.dropcolumn --help
v.db.dropcolumn map=name [layer=string]
columns=name[,name,...] [--help]
[--verbose] [--quiet] [--ui]
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.
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.
Dropping a column:
g.copy vect=roadsmajor,myroads v.info -c myroads v.db.dropcolumn myroads column=SHAPE_LEN v.info -c myroads
db.connect, db.dropcolumn,
db.execute, v.db.addcolumn, v.db.connect,
v.db.droptable, v.db.select, v.db.update
GRASS SQL interface
Markus Neteler
Available at: v.db.dropcolumn source code (history)
Main index | Vector index | Topics index | Keywords index | Graphical index | Full index
© 2003-2020 GRASS Development Team, GRASS GIS 7.8.5 Reference Manual
GRASS 7.8.5 |