anchor.diff:      : TRUNCATE TABLE? ONLY? tableNameParts
       ;
   
  -createSpecification_
  +createTableSpecification_
       : ((GLOBAL | LOCAL)? (TEMPORARY | TEMP) | UNLOGGED)?
       ;
   
  
positive.code: inheritClause_
      : (INHERITS tableNames)?
      ;
  
  alterIndexName
      : ALTER INDEX (IF EXISTS)? indexName
  
negative.code: import Symbol, Keyword, Literals, BaseRule;
  
  createTable
      : CREATE createTableSpecification_ TABLE notExistClause_ tableName createDefinitionClause_ inheritClause_
      ;
  
  createIndex
      : CREATE createIndexSpecification_ (indexNotExistClause_ indexName)? ON tableName 
      ;
  
  alterTable
  