[42000][923] Ora00923: From Keyword Not Found Where Expected

ora 923 The error message ORA-00923 points to a problem in the SQL statement structure, specifically indicating that the FROM keyword is not where Oracle expects it to be. This. Appear a error SQL Error [923] [42000]:

ora 923, このエラーはのようなにします SQL> select sysdate dual; select sysdate dual * 1でエラーがしました : ORA-00923: FROMキーワードがのに.