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NAME

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

KEYWORDS

database, attribute table, SQL

SYNOPSIS

db.copy
db.copy help
db.copy [from_driver=name] [from_database=name] [from_table=name] [to_driver=name] [to_database=name] to_table=name [where=sql_query] [select=string] [--overwrite] [--verbose] [--quiet]

Flags:

--overwrite
Allow output files to overwrite existing files
--verbose
Verbose module output
--quiet
Quiet module output

Parameters:

from_driver=name
Input driver name
Options: dbf,odbc,pg,mysql,sqlite,ogr
Default: dbf
from_database=name
Input database name
Default: $GISDBASE/$LOCATION_NAME/$MAPSET/dbf/
from_table=name
Input table name (only, if 'select' is not used)
to_driver=name
Output driver name
Options: dbf,odbc,pg,mysql,sqlite,ogr
Default: dbf
to_database=name
Output database name
Default: $GISDBASE/$LOCATION_NAME/$MAPSET/dbf/
to_table=name
Output table name
where=sql_query
WHERE conditions of SQL statement without 'where' keyword
Example: income < 1000 and inhab >= 10000
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 using db.copy and, when to be associated to a vector map, assigned to the map with v.db.connect. Current connection settings are saved in the file $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/sqlite.db to_table=ammprv

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

SQLite -> DBF

db.copy from_driver=sqlite from_database=$HOME/grassdata/spearfish60/user1/sqlite.db \
   from_table=ammprv to_driver=dbf to_database=$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: 2013-03-18 10:51:35 -0700 (Mon, 18 Mar 2013) $


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