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NAMEv.db.addcolumn - Adds one or more columns to the attribute table connected to a given vector map.KEYWORDSvector, attribute table, databaseSYNOPSISv.db.addcolumnv.db.addcolumn --help v.db.addcolumn map=name [layer=string] columns=name type[,name type,...] [--help] [--verbose] [--quiet] [--ui] Flags:
Parameters:
DESCRIPTIONv.db.addcolumn adds one or more column(s) to the attribute table connected to a given vector map. It automatically checks the connection for the specified layer.NOTESv.db.addcolumn is a front-end to db.execute to allow easier usage. The supported types of columns depend on the database backend. However, all backends should support VARCHAR, INT, DOUBLE PRECISION and DATE.The existing database connection(s) can be verified with v.db.connect. EXAMPLESAdding a single column:g.copy vect=roadsmajor,myroads v.db.addcolumn myroads columns="slope double precision" v.info -c myroads Adding two columns:
g.copy vect=roadsmajor,myroads v.db.addcolumn myroads columns="slope double precision,myname varchar(15)" v.info -c myroads SEE ALSOdb.connect, db.execute, v.db.addtable, v.db.connect, v.db.dropcolumn, v.db.droptable, v.db.select, v.db.updateGRASS SQL interface AUTHORMoritz Lennert (mlennert@club.worldonline.be)SOURCE CODEAvailable at: v.db.addcolumn source code (history)Main index | Vector index | Topics index | Keywords index | Graphical index | Full index © 2003-2021 GRASS Development Team, GRASS GIS 7.8.6 Reference Manual
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