gmRemove: Delete objects in an geometallurgical database
In gmDatabase: Accessing a Geometallurgical Database with R

Description Usage Arguments Details Value Author(s) See Also Examples

Deletes the specified object in an geometallurgical database.

1 2	gmRemove(expr, which=NULL, var=NULL, EXPR=substitute(expr), WHICH=substitute(which), envir=parent.frame(), db=getOption("gmDB"))

`expr`	R expression of an SQL query. Expressions created with `gmExpr` and an ID in the database can be used as well.
`which`	Specifies for a set variable, which entry shall be deleted.
`var`	Defines the attributes, that shall be deleted.
`EXPR`	The quoted version of such an expression.
`WHICH`	The quoted version of `which`.
`envir`	defines the environment used for evaluation of `expr`.
`db`	The connection to the database.

gmRemove deletes the specified object in a geometallurgical database. This may include the removal of all its members, too.

If you only want to remove a certain attribute for an object, than use the argument var for specifying. In the case of this attribute being an object itself but not a value, you may have more than one entry to choose for deleting. Therefor choose the right one by stating an id or an gmExpr in the which argument.

No value.

K. Gerald van den Boogaart, S. Matos Camacho

gmRead, gmExpr

## Not run: 
gmRemove(4545)
gmRemove(root$project[gmTitle=="Project X"])
gmRemove(root$gmUserGroup, root$gmUser[gmUserName=="userXY"], var="gmUser")
gmRemove(root$project[gmTitle=="Project X"], var="gmTitle"))

## End(Not run)