anchor.diff:  createIndexSpecification_
       : (UNIQUE | FULLTEXT | SPATIAL)?
       ;
  +
  +
  +
   
   
   
  
positive.code:     : TEMPORARY?
      ;
  
  notExistClause_
      : (IF NOT EXISTS)?
      ;
  
  
negative.code: import Symbol, Keyword, Literals, BaseRule;
  
  createTable
      : CREATE createTableSpecification_ TABLE tableNotExistClause_ tableName (createDefinitionClause_ | createLikeClause_)
      ;
  
  createIndex
  