anchor.diff:  //https://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_4006.htm#SQLRF01106
   associate_statistics
       : ASSOCIATE STATISTICS 
  -        WITH ( column_association
  -             | function_association
  -             )
  -         storage_table_clause?
  +        WITH (column_association | function_association)
  +        storage_table_clause?
         ';'
       ;
   
  
positive.code:     ;
  
  audit_schema_object_clause
      : ( (','? sql_operation)+
        | ALL
        )
  
        auditing_on_clause
      ;
  
  sql_operation
  
negative.code:     ;
  
  audit_operation_clause
      : ( (','? (sql_statement_shortcut | ALL STATEMENTS?) )+
        | (','? (system_privilege | ALL PRIVILEGES) )+
        )
      ;
  