db.columns - GRASS manual

NAME

db.columns - List all columns for a given table.

KEYWORDS

SYNOPSIS

db.columns

db.columns --help

db.columns [-e] table=name [driver=name] [database=name] [separator=character] format=name [--help] [--verbose] [--quiet] [--ui]

Flags:

-e: Print type information about the columns; Print the name and the type of all the columns for a given table.
--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

table=name [required]: Name of attribute table
driver=name: Name of database driver; Options: dbf, ogr, sqlite; Default: sqlite
database=name: Name of database; Default: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db
separator=character: Field separator; Special characters: pipe, comma, space, tab, newline
format=name [required]: Output format; Options: plain, csv, json, list; Default: plain; plain: Configurable plain text output; csv: CSV (Comma Separated Values); json: JSON (JavaScript Object Notation); list: Output in list format

DESCRIPTION
NOTE
EXAMPLES
SEE ALSO
AUTHOR

DESCRIPTION

db.columns lists all columns for a give table. Connection to databases are supported through dbf, shp, odbc and pg drivers.

NOTE

If parameters for database connection are already set with db.connect, they are taken as default values and do not need to be specified each time.

EXAMPLES

List columns of a PostgreSQL attribute table

db.columns table=zipcodes_wake driver=pg database=grassdb

If the database parameters are already set, the columns can be listed directly

db.columns table=zipcodes_wake

List columns from Shape file with DBF attribute table

db.columns table=zipcodes_wake driver=dbf database=/grassdata/nc_spm_08/PERMANENT/dbf/

List columns of table in SQLite database

Note that the SQLite backend is the default setting.

db.columns driver=sqlite table=archsites database='$GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db'

AUTHOR

Radim Blazek, ITC-Irst, Trento, Italy

SOURCE CODE

Available at: db.columns source code (history)

Latest change: Saturday Jan 31 03:52:33 2026 in commit: 5dd1f9083055d3047f66dba6c3aec01c50dbdf2d