db.select(1)

NAME
db.select

DESCRIPTION
db.select prints result of selection from database based on SQL statement read from input file or from standard input to standard output.

NOTE
If parameters for database connection are already set with db.connect, they are taken as default values and do not need to be spcified each time. Output will be displayed to stdout or can be directed to a file.

EXAMPLES
echo "select * from roads" | db.select
or
 cat file.sql | db.select
or
 db.select input=file.sql

Select all from table roads
db.select -c driver=odbc database=g51test table=roads input=file.sql > result.csv

Select some string attribute, exclude others:
echo "SELECT * FROM archsites WHERE str1 <> 'No Name'" | db.select

Select some string attribute with ZERO length:
echo "SELECT * FROM archsites WHERE str1 IS NULL" | db.select

Select coordinates from PostGIS table:
echo "SELECT x(geo),y(geo) FROM localizzazione" | db.select

SEE ALSO
GRASS SQL interface, db.connect, db.describe, db.drivers, db.droptable, db.execute, db.login, db.tables

AUTHOR
?
Modifications: Radim Blazek, ITC-Irst, Trento, Italy

Last changed: $Date: 2010-11-08 00:02:28 +0100 (Mon, 08 Nov 2010) $

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