This is the command db.dropcolumngrass that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator
PROGRAM:
NAMA
db.dropcolumn - Drops a column from selected attribute table.
KEYWORDS
database, tabel atribut
RINGKASAN
db.dropcolumn
db.dropcolumn --membantu
db.dropcolumn [-f] tabel=nama kolom=nama [--membantu] [--bertele-tele] [--tenang] [--ui]
Bendera:
-f
Penghapusan paksa (diperlukan untuk penghapusan file yang sebenarnya)
--membantu
Cetak ringkasan penggunaan
--bertele-tele
Keluaran modul verbose
--diam
Keluaran modul yang tenang
--ui
Paksa meluncurkan dialog GUI
Parameter:
tabel=nama [yg dibutuhkan]
Nama tabel atribut
kolom=nama [yg dibutuhkan]
Nama kolom atribut
DESKRIPSI
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.
CATATAN
db.dropcolumn adalah ujung depan untuk db.jalankan to allow easier usage with a special workaround
for the SQLite driver to support column drop also for SQLite tables.
CONTOH
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
Use db.dropcolumngrass online using onworks.net services
