anchor.diff:  import MySQLKeyword, Keyword, Symbol, MySQLDQLStatement, MySQLBase, BaseRule, DataType;
   
   insert
  -    : INSERT (LOW_PRIORITY | DELAYED | HIGH_PRIORITY IGNORE)? INTO? tableName (PARTITION ignoredIdentifiers_)? (setClause | columnClause) onDuplicateKeyClause?
  +    : INSERT (LOW_PRIORITY | DELAYED | HIGH_PRIORITY)? IGNORE? INTO? tableName (PARTITION ignoredIdentifiers_)? (setClause | columnClause) onDuplicateKeyClause?
       ;
   
   columnClause
  
positive.code:     ;
  
  deleteClause
      : DELETE deleteSpec (fromMulti | fromSingle) 
      ;
  
  fromSingle
      : FROM tableName (PARTITION columnNames)?
      ;
  
  fromMulti
  
negative.code: fromMultiTable
      : tableName DOT_ASTERISK_?
      ;
  