anchor.diff:  import Symbol, Keyword, MySQLKeyword, Literals, BaseRule;
   
   createTable
  -    : CREATE createTableSpecification_ TABLE tableNotExistClause_ tableName (createDefinitionClause_ | createLikeClause_)
  +    : CREATE createTableSpecification_? TABLE tableNotExistClause_ tableName (createDefinitionClause_ | createLikeClause_)
       ;
   
   createIndex
  
positive.code:     ;
  
  createTableSpecification_
      : TEMPORARY?
      ;
  
  tableNotExistClause_
  
negative.code:     ;
  
  dropIndex
      : DROP INDEX dropIndexSpecification_? indexName (ON tableName)?
      ;
  
  truncateTable
  