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