Ms access 访问IIF查询

我需要我的最终决策字段作为IIF语句的结果

但我总是会遇到语法错误

    SELECT x.AR_ID, 
           Final Decision: IIf([x].[R_DECISION] Is Not Null,
                               [R_DECISION],
                               IIf([ap_decsion] Is Not Null,
                                   [ap_decsion],
                                   IIf([ho_decision] Is Not Null,
                                       [ho_decision],[ar_decision])
                                   )
                              ) FROM x;

---

您需要将列别名放在

IIF

语句的末尾，并在其周围放置

[]

  SELECT x.AR_ID, 
         IIf([x].[R_DECISION] Is Not Null,
            [R_DECISION],
            IIf([ap_decsion] Is Not Null,
               [ap_decsion],
                  IIf([ho_decision] Is Not Null,
                     [ho_decision],
                     [ar_decision]))) as [Final Decision:]

  FROM x;

---

您需要将列别名放在

IIF

语句的末尾，并在其周围放置

[]

  SELECT x.AR_ID, 
         IIf([x].[R_DECISION] Is Not Null,
            [R_DECISION],
            IIf([ap_decsion] Is Not Null,
               [ap_decsion],
                  IIf([ho_decision] Is Not Null,
                     [ho_decision],
                     [ar_decision]))) as [Final Decision:]

  FROM x;

---

请尝试改用ISNULL：

SELECT x.AR\u ID，最终决定：IIf（非ISNULL（[x].[R\u Decision]），[R\u Decision]，IIf（非ISNULL（[ap\u Decision]），[ap\u Decision]，IIf（非ISNULL（[ho\u Decision]），[ho\u Decision]，[AR\u Decision]））
从x
尝试改用ISNULL：

SELECT x.AR\u ID，最终决定：IIf（非ISNULL（[x].[R\u Decision]），[R\u Decision]，IIf（非ISNULL（[ap\u Decision]），[ap\u Decision]，IIf（非ISNULL（[ho\u Decision]），[ho\u Decision]，[AR\u Decision]））
从x
谢谢！！该死，我知道这比我想的要简单！非常感谢。该死，我知道这比我想的要简单！