PostgreSQL driver in GRASS

The driver name is 'pg'.

Creating a PostgreSQL database

A new database is created with 'createdb', see the PostgreSQL manual for details.

Connecting GRASS to PostgreSQL

# example for connecting to a PostgreSQL server:
db.connect driver=pg database="host=myserver.itc.it,dbname=mydb"
db.login user=myname pass=secret
db.connect -p
db.tables -p

Supported SQL commands

All SQL commands supported by PostgreSQL.

Operators available in conditions

All SQL operators supported by PostgreSQL.

Adding an unique ID column

Import vector module require an unique ID column which can be generated as follows in a PostgreSQL table:

echo "
 ALTER TABLE mytable ADD ID integer;
 CREATE SEQUENCE mytable_seq;
 UPDATE mytabe SET ID = nextval('mytable_seq');
 DROP SEQUENCE mytable_seq;
" | db.execute

Attribute Converters

CSV import into PostgreSQL:

\h copy
COPY t1 FROM 'filename' USING DELIMITERS ',';

pg2xbase: DBF to PostgreSQL converter.

PostGIS: PostgreSQL with vector geometry

PostGIS: add geographic object support to PostgreSQL.

Geometry Converters

PostGIS with shp2pgsql:
shp2pgsql -D lakespy2 lakespy2 test > lakespy2.sql
e00pg: E00 to PostGIS filter, see also v.in.e00.
GDAL/OGR ogrinfo and ogr2ogr: GIS vector format converter and library, e.g. ArcInfo or SHAPE to PostGIS.
ogr2ogr -f "PostgreSQL" shapefile ??