db.copy - Copy a table.
Contents
Description
db.copy allows the user to copy a table between two databases. Databases can be connected through
different drivers (see examples below).
Examples
FromDBFtoPostgreSQLStoringtable’geonames.dbf’(incurrentdirectory)intoPostgreSQLthroughODBC:
db.copy from_driver=dbf from_database=’$GISDBASE/$LOCATION_NAME/PERMANENT/dbf’ \
from_table=geonames to_driver=pg to_database="host=pgserver,dbname=testdb" \
to_table=geonames
FromPostgreSQLtoDBF
db.copy from_driver=pg from_database="host=pgserver.example.org,dbname=testdb" \
from_table=origtable to_driver=dbf \
to_database=’$GISDBASE/$LOCATION_NAME/$MAPSET/dbf’ to_table=origtable
FromPostgreSQLtoPostgreSQLwithcondition
db.copy from_driver=pg from_database="host=localhost,dbname=testdb" \
from_table=geonames to_driver=pg to_database="host=localhost,dbname=testdb" \
to_table=selection where="cat < 500"
FromDBFtoSQLite
db.copy from_driver=dbf from_database=’$GISDBASE/$LOCATION_NAME/PERMANENT/dbf’ \
from_table=geonames_features to_driver=sqlite \
to_database=’$GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db’ to_table=geonames_features
# convenient viewer:
sqlitebrowser $HOME/grassdata/nc_spm_08/user1/sqlite/sqlite.db
FromSQLitetoDBF
db.copy from_driver=sqlite from_database=’$GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.db’ \
from_table=ammprv to_driver=dbf to_database=’$GISDBASE/$LOCATION_NAME/$MAPSET/dbf/’ \
to_table=ammprv
Keywords
database, attribute table, SQL
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.
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.
See Also
db.connect,db.drivers,db.login,v.db.connect,v.clean
GRASS SQL interface
Source Code
Available at: db.copy source code (history)
Accessed: Friday Apr 04 01:18:42 2025
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© 2003-2025 GRASS Development Team, GRASS GIS 8.4.1 Reference Manual
GRASS 8.4.1 db.copy(1grass)
Synopsis
db.copydb.copy--helpdb.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] [--help]
[--verbose] [--quiet] [--ui]
Flags:--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog
Parameters:from_driver=name
Input driver name
Options: dbf,mysql,odbc,ogr,pg,sqlite
Default: sqlitefrom_database=name
Input database name
Default: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.dbfrom_table=name
Input table name (only, if ’select’ is not used)
to_driver=name
Output driver name
Options: dbf,mysql,odbc,ogr,pg,sqlite
Default: sqliteto_database=name
Output database name
Default: $GISDBASE/$LOCATION_NAME/$MAPSET/sqlite/sqlite.dbto_table=name[required]
Output table name
where=sql_query
WHERE conditions of SQL statement without ’where’ keyword
Example: income < 1000 and population >= 10000
select=string
Full select statement (only, if ’from_table’ and ’where’ is not used)
E.g.: SELECT dedek FROM starobince WHERE obec = ’Frimburg’
