## NAME

db.copy - Copy a table. Either 'from_table' (optionaly with 'where') can be used or 'select' option, but not 'from_table' and 'select' at the same time.

## KEYWORDS

database, SQL

## SYNOPSIS

db.copy
db.copy help
db.copy [from_driver=string] [from_database=string] [from_table=string] [to_driver=string] [to_database=string] to_table=string [where=string] [select=string]

### Parameters:

from_driver=string
  Input driver name
  Options: dbf,pg,ogr
from_database=string
  Input database name
from_table=string
  Input table name (only, if 'select' is not used)
to_driver=string
  Output driver name
  Options: dbf,pg,ogr
to_database=string
  Output database name
to_table=string
  Output table name
where=string
  Optional where condition (without WHERE key word), e.g.:
  obec = 'Liptakov'
select=string
  Full select statement (only, if 'from_table' and 'where' is not used), e.g.:
  SELECT dedek FROM starobince WHERE obec = 'Frimburg'

## DESCRIPTION

db.copy allows the user to copy a table between two databases. Databases can be connected through different drivers (see example).

## NOTES

Attribute tables can be copied manually using db.copy and v.db.connect. Current connection settings are saved in $LOCATION/vector_map/dbln.

## EXAMPLES

### DBF -> PG

Storing table 'markveggy.dbf' (in current directory) into PostgreSQL through ODBC:

    db.copy from_driver=dbf from_database=$HOME/grassdata/spearfish60/user1/dbf \
      from_table=markveggy to_driver=pg to_database="host=pgserver,dbname=grass6test" \
      to_table=markveggy

### PG -> DBF

    db.copy from_driver=pg  from_database="host=pgserver.itc.it,dbname=testdb" \
      from_table=origtable to_driver=dbf \
      to_database=$HOME/grassdata/spearfish60/user1/dbf to_table=origtable

### PG -> PG with condition

    db.copy from_driver=pg  from_database="host=localhost,dbname=meteo" \
      from_table=ukraine to_driver=pg to_database="host=localhost,dbname=meteo" \
      to_table=selection where="cat < 500"

### DBF -> SQLite

    db.copy from_driver=dbf from_database=$HOME/grassdata/spearfish60/user1/dbf \
       from_table=ammprv to_driver=sqlite \
       to_database=$HOME/grassdata/spearfish60/user1/mysqlite.db to_table=ammprv

    # convenient viewer:
    sqlitebrowser $HOME/grassdata/spearfish60/user1/mysqlite.db

### SQLite -> DBF

    db.copy from_driver=sqlite from_database=$HOME/grassdata/spearfish60/user1/mysqlite.db \
       from_table=ammprv to_driver=dbf to_database=$HOME/grassdata/spearfish60/user1/dbf \
       to_table=ammprv

## SEE ALSO

v.db.connect, db.drivers, db.login, v.clean, GRASS SQL interface

## AUTHOR

Radim Blazek, ITC-irst, Trento, Italy

Last changed: $Date: 2006/03/21 17:29:39 $

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