anchor.diff:  import Symbol, Keyword, Literals, BaseRule;
   
   createTable
  -    : CREATE createSpecification_ TABLE notExistClause_ tableName (createDefinitionClause_ | createLikeClause_)
  +    : CREATE createTableSpecification_ TABLE notExistClause_ tableName (createDefinitionClause_ | createLikeClause_)
       ;
   
   createIndex
  -    : CREATE (UNIQUE | FULLTEXT | SPATIAL)? INDEX indexName indexType_? ON tableName
  +    : CREATE createIndexSpecification_ INDEX indexName indexType_? ON tableName
       ;
   
   alterTable
  
positive.code:     : TRUNCATE TABLE? tableName
      ;
  
  createSpecification_
      : TEMPORARY?
      ;
  
  
negative.code: createLikeClause_
      : LP_? LIKE tableName RP_?
      ;
  
  createIndexSpecification_
      : (UNIQUE | FULLTEXT | SPATIAL)?
      ;
  
  
  
  
  
  
  alterSpecifications_
      : alterSpecification_ (COMMA_ alterSpecification_)*
  