anchor.diff:  privObjectType
   @init {pushMsg("privilege object type type", state);}
   @after {popMsg(state);}
  -    : KW_DATABASE -> ^(TOK_DB_TYPE)
  +    : (KW_DATABASE|KW_SCHEMA) -> ^(TOK_DB_TYPE)
       | KW_TABLE? -> ^(TOK_TABLE_TYPE)
       ;
   
  
positive.code:         |
              KW_INDEX! alterIndexStatementSuffix
          |
              KW_DATABASE! alterDatabaseStatementSuffix
          )
      ;
  
  
negative.code: lockDatabase
  @init { pushMsg("lock database statement", state); }
  @after { popMsg(state); }
      : KW_LOCK (KW_DATABASE|KW_SCHEMA) (dbName=Identifier) lockMode -> ^(TOK_LOCKDB $dbName lockMode)
      ;
  
  lockMode
  