
NAME
v.db.select - Prints vector map attributes.
KEYWORDS
vector, database, attribute table
SYNOPSIS
v.db.select
v.db.select help
v.db.select [-cv] map=name [layer=integer] [columns=name[,name,...]] [where=sql_query] [fs=character] [vs=character] [nv=string] [--verbose] [--quiet]
Flags:
- -c
- Do not include column names in output
- -v
- Vertical output (instead of horizontal)
- --verbose
- Verbose module output
- --quiet
- Quiet module output
Parameters:
- map=name
- Name of input vector map
- layer=integer
- Layer number
- A single vector map can be connected to multiple database tables. This number determines which table to use.
- Default: 1
- columns=name[,name,...]
- Name of attribute column(s)
- where=sql_query
- WHERE conditions of SQL statement without 'where' keyword
- Example: income < 1000 and inhab >= 10000
- fs=character
- Output field separator
- Default: |
- vs=character
- Output vertical record separator
- nv=string
- Null value indicator
DESCRIPTION
v.db.select prints attributes of a vector map from one or several
user selected attribute table columns.
EXAMPLE
Select and show entire table:
v.db.select roads
cat|label
0|no data
1|interstate
2|primary highway, hard surface
3|secondary highway, hard surface
4|light-duty road, improved surface
5|unimproved road
Select and show single column from table (multiple columns can be specified as comma separated list):
v.db.select roads col=label
label
no data
interstate
primary highway, hard surface
secondary highway, hard surface
light-duty road, improved surface
unimproved road
SEE ALSO
db.select
AUTHOR
Radim Blazek, ITC-Irst, Trento, Italy
Last changed: $Date: 2008-05-21 03:39:23 -0500 (Wed, 21 May 2008) $
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