NAME
v.db.renamecol - Renames a column in a attribute table connected to a given vector map.
KEYWORDS
vector, database, attribute table
SYNOPSIS
v.db.renamecol
v.db.renamecol help
v.db.renamecol map=name [layer=integer] column=string[,string,...] [--verbose] [--quiet]
Parameters:
- map=name
- Vector map for which to rename attribute column
- layer=integer
- Layer where to rename column
- Default: 1
- column=string[,string,...]
- Old and new name of the column (old,new)
DESCRIPTION
v.db.renamecol renames a column in the attribute table connected
to a given vector map. It automatically checks the connection for the specified
layer.
NOTES
If the map table is connected through the DBF or SQLite drivers, the renaming
is internally done by adding a new column with new name, transferring the contents
of the old column to the new column and dropping the old column. This is needed
as DBF or SQLite do not support "ALTER TABLE" command to rename columns. Due to
this the renamed column is found as last column of the table, it's original position
cannot be maintained.
EXAMPLES
Renaming a column:
v.info -c myroads
v.db.renamecol myroads column=label,roadtype
v.info -c myroads
SEE ALSO
db.execute,
v.db.addcol,
v.db.addtable,
v.db.connect,
v.db.dropcol,
v.db.droptable,
v.db.select,
v.db.update
AUTHOR
Markus Neteler
Last changed: $Date: 2007-04-07 09:46:47 -0700 (Sat, 07 Apr 2007) $
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