.TH db.dropcol 1grass "" "GRASS 6.4.2" "Grass User's Manual"
.SH NAME
\fI\fBdb.dropcol\fR\fR  - Drops a column from selected attribute table
.SH KEYWORDS
database, attribute table
.SH SYNOPSIS
\fBdb.dropcol\fR
.br
\fBdb.dropcol help\fR
.br
\fBdb.dropcol\fR [-\fBf\fR] \fBtable\fR=\fIname\fR \fBcolumn\fR=\fIstring\fR  [--\fBverbose\fR]  [--\fBquiet\fR] 
.SS Flags:
.IP "\fB-f\fR" 4m
.br
Force removal (required for actual deletion of files)
.IP "\fB--verbose\fR" 4m
.br
Verbose module output
.IP "\fB--quiet\fR" 4m
.br
Quiet module output
.PP
.SS Parameters:
.IP "\fBtable\fR=\fIname\fR" 4m
.br
Table from which to drop attribute column
.IP "\fBcolumn\fR=\fIstring\fR" 4m
.br
Name of the column
.PP
.SH DESCRIPTION
\fIdb.dropcol\fR drops a column from an attribute table.
If the \fB-f\fR force flag is not given then nothing is removed, instead
a preview of the action to be taken is printed.
.SH NOTES
\fIdb.dropcol\fR is a front-end to \fIdb.execute\fR to allow easier
usage with a special workaround for the SQLite driver to support column
drop.
.SH EXAMPLES
Dropping a column (Spearfish):
.PP
\fC
.DS
.br
# work on own copy
.br
g.copy vect=roads,myroads
.br
db.describe -c myroads
.br
.br
# only shows what would happen:
.br
db.dropcol myroads column=label
.br
.br
# actually drops the column
.br
db.dropcol -f myroads column=label
.br
.br
db.describe -c myroads
.br
.DE
\fR
.SH SEE ALSO
\fIdb.droptable\fR,
\fIdb.execute\fR,
\fIv.db.dropcol\fR
.SH AUTHOR
Markus Neteler
.PP
\fILast changed: $Date: 2011-11-08 10:42:51 +0100 (Tue, 08 Nov 2011) $\fR
.PP
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.PP
© 2003-2011 GRASS Development Team