return super.transform(opDatasetNames) ;
// Basically, an implementation of "GRAPH ?g {}"
Node g = opDatasetNames.getGraphNode() ;
if ( ! Var.isVar(g) )
throw new SDBInternalError("OpDatasetNames - not a variable: "+g) ;
Var v = Var.alloc(g) ;
// Inner SELECT SQL: (SELECT DISTINCT g FROM Quads)
TableDescQuads quads = request.getStore().getQuadTableDesc() ;
SqlTable sqlTableQ = new SqlTable(quads.getTableName()) ;