[GRASS-user] Re: [GRASSLIST:1140] Re: Qn. on extracting from
multiple rasters, data corresponding to vector polygons
tutey at o2.pl
Sun Sep 17 12:16:01 EDT 2006
> Vishal Mehta wrote:
>> echo "DELETE FROM watershed8c COLUMN LIKE 'rain'" | db.execute
>> but they did'nt work.
>> How do i delete say all columns that start with the text 'rain' from a
> I'm not sure, but the DBF driver may not support "DELETE" ?
Correct. Neither DROP COLUMN will work. Neither in SQLITE doesn't. A
> Make a new table, copy columns you want to keep, v.db.droptable the old
> table? or use another db?
Postgres and Mysql support DROP COLUMN.
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