anchor.diff:  
   error_message
    : STRING_LITERAL
  - ;
  -
  -module_argument // TODO check what exactly is permitted here
  - : expr
  - | column_def
    ;
   
   column_alias
  
positive.code: create_view_stmt
   : K_CREATE ( K_TEMP | K_TEMPORARY )? K_VIEW ( K_IF K_NOT K_EXISTS )?
     view_name K_AS select_stmt
   ;
  
  create_virtual_table_stmt
   : K_CREATE K_VIRTUAL K_TABLE ( K_IF K_NOT K_EXISTS )?
     table_name
     K_USING module_name ( '(' module_argument ( ',' module_argument )* ')' )?
   ;
  
  delete_stmt
  
negative.code:  ;
  
  view_name 
   : any_name
   ;
  
  