xenial (1) db.connect.1grass.gz

NAME

       db.connect  - Prints/sets general DB connection for current mapset.

KEYWORDS

       database, attribute table, connection settings

SYNOPSIS

       db.connect
       db.connect --help
       db.connect   [-pgcd]    [driver=name]     [database=name]     [schema=name]    [group=string]    [--help]
       [--verbose]  [--quiet]  [--ui]

   Flags:
       -p
           Print current connection parameters and exit
           Substitute variables in database settings

       -g
           Print current connection parameters using shell style and exit

       -c
           Check connection parameters, set if uninitialized, and exit

       -d
           Set from default settings and exit
           Overwrite current settings if already initialized

       --help
           Print usage summary

       --verbose
           Verbose module output

       --quiet
           Quiet module output

       --ui
           Force launching GUI dialog

   Parameters:
       driver=name
           Name of database driver
           Options: mysql, odbc, sqlite, pg, ogr, dbf
           Default: sqlite

       database=name
           Name of database
           Default: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db

       schema=name
           Database schema
           Do not use this option if schemas are not supported by driver/database server

       group=string
           Default group of database users to which select privilege is granted

DESCRIPTION

       db.connect allows the user to set database connection parameters.  These parameters  are  then  taken  as
       default values by modules so that the user does not need to enter the parameters each time.

       The default database backend in GRASS GIS 7 is SQLite.

NOTES

       Values are stored in the mapset’s VAR file; the connection is not tested for validity.

       The -p flag will display the current connection parameters.

       The  -c  flag will silently check if the connection parameters have been set, and if not will set them to
       use GRASS’s default values.  (useful in scripts before you attempt to create a new database table)

       To connect a vector map to a database table, use v.db.connect or v.db.addtable.

EXAMPLES

   SQLite (default backend)
       Local storage:
       db.connect -d
       db.connect -p
       db.tables -p

       The SQLite database file is created automatically when used the first time.

   ODBC
       Network storage, database tables stored in database "mydb" (may require the use of db.login):
       db.connect driver=odbc database=mydb
       db.login user=myname [pass=secret]
       db.connect -p
       db.tables -p

   PostgreSQL
       Network storage, database tables stored in database "mydb" (may require the use of db.login):
       db.connect driver=pg database="host=myserver.itc.it,dbname=mydb"
       db.login user=myname [pass=secret]
       db.connect -p
       db.tables -p

   PostgreSQL with different port
       Network storage, database tables stored in database "mydb" (may require the use of db.login):
       db.connect driver=pg database="host=myserver.itc.it,dbname=mydb,port=6666"
       db.login user=myname [pass=secret]
       db.connect -p
       db.tables -p

   MySQL (local connection)
       Local storage (db.login may not be needed):
       db.connect driver=mysql database=mydb
       db.login user=myname [pass=secret]
       db.connect -p
       db.tables -p

   MySQL (external server)
       Network storage, database tables stored in database "mydb" (may require the use of db.login):
       db.connect driver=mysql database="host=myserver.itc.it,dbname=mydb"
       db.login user=myname [pass=secret]
       db.connect -p
       db.tables -p

   DBF (local, not recommended)
       Local storage (the dbf/ subdirectory in the mapset must exist or must be created by the user):
       db.connect driver=dbf database=’$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/’
       db.tables -p

SEE ALSO

        db.columns, db.copy, db.drivers, db.login, db.tables, v.db.addtable, v.db.connect

       GRASS SQL interface

AUTHORS

       Main author: Radim Blazek, ITC-Irst, Trento, Italy
       GRASS 7 improvements: Martin Landa, Markus Metz

       Last changed: $Date: 2014-11-28 10:58:18 +0100 (Fri, 28 Nov 2014) $

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       © 2003-2016 GRASS Development Team, GRASS GIS 7.0.3 Reference Manual