1db.dropcol(1)                 Grass User's Manual                db.dropcol(1)
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NAME

6       db.dropcol  - Drops a column from selected attribute table
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KEYWORDS

9       database, attribute table
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SYNOPSIS

12       db.dropcol
13       db.dropcol help
14       db.dropcol [-f] table=name column=string  [--verbose]  [--quiet]
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16   Flags:
17       -f
18           Force removal (required for actual deletion of files)
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20       --verbose
21           Verbose module output
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23       --quiet
24           Quiet module output
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26   Parameters:
27       table=name
28           Table from which to drop attribute column
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30       column=string
31           Name of the column
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DESCRIPTION

34       db.dropcol  drops  a  column  from an attribute table.  If the -f force
35       flag is not given then nothing is removed, instead  a  preview  of  the
36       action to be taken is printed.
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NOTES

39       db.dropcol  is  a  front-end to db.execute to allow easier usage with a
40       special workaround for the SQLite driver to support column drop.
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EXAMPLES

43       Dropping a column (Spearfish):
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46       # work on own copy
47       g.copy vect=roads,myroads
48       db.describe -c myroads
49       # only shows what would happen:
50       db.dropcol myroads column=label
51       # actually drops the column
52       db.dropcol -f myroads column=label
53       db.describe -c myroads
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SEE ALSO

57       db.execute, v.db.dropcol
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AUTHOR

60       Markus Neteler
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62       Last changed: $Date: 2007-07-14 12:59:51 +0200 (Sat, 14 Jul 2007) $
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64       Full index
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66       © 2003-2008 GRASS Development Team
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70GRASS 6.3.0                                                      db.dropcol(1)