anchor.diff:      ;
   
   audit_schema_object_clause
  -    : ( (','? sql_operation)+
  -      | ALL
  -      )
  -
  -      auditing_on_clause
  +    : ( (','? sql_operation)+ | ALL) auditing_on_clause
       ;
   
   sql_operation
  
positive.code: parser grammar PlSqlParser;
  
  options { tokenVocab=PlSqlLexer; }
  @members {boolean version12=true;}
  sql_script
      : ((unit_statement | sql_plus_command) SEMICOLON?)* EOF
      ;
  
negative.code: //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?
        ';'
      ;
  
  