你如何在同一个查询中更新两次？

Question

我试图在同一个查询中使用两次更新来修改我的 TABLE 数据。你能解释一下我是怎么做到的吗？我在以下代码中遇到语法错误：

UPDATE HRBI SET HRBI.PayGroupLocationPayGroupCountryCode = IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' AND HRBI.ManagementLevel = 'VP', 'DEU - Exec',
IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' AND HRBI.ManagementLevel = 'SVP', 'DEU - Exec',
IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' AND HRBI.ManagementLevel = 'FEL', 'DEU - Exec',
IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' AND HRBI.ManagementLevel = 'DIR', 'DEU - Exec',
IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' AND HRBI.ManagementLevel = 'SFL', 'DEU - Exec',
IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' AND HRBI.ManagementLevel = 'STR', 'DEU - Exec',
IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' AND HRBI.ManagementLevel = 'EVP', 'DEU - Exec', 
IIF(HRBI.WorkerID = '45' OR HRBI.WorkerID = '46' OR HRBI.WorkerID = '47' OR HRBI.WorkerID = '48' OR HRBI.WorkerID = '49' OR HRBI.WorkerID = '50' OR HRBI.WorkerID = '51', 'DEU - Exec', HRBI.PayGroupLocationPayGroupCountryCode))))))))
UPDATE SET HRBI.PayGroupCountryDesc = IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU - Exec', "Germany - Exec',HRBI.PayGroupCountryDesc);

我试图在另一个更新的末尾添加一个额外的更新。另外，有没有办法在 Access SQL 中添加评论？谢谢！

Answer 1

太疯狂了SQL。

您的 set 语句实际上是说如果行中的某些字段符合特定条件，则使 HRBI.PayGroupLocationPayGroupCountryCode 的值 = 'DEU - Exec'，否则保持原样。

"certain criteria" 应作为 where 子句实现！

所以变成：

    UPDATE HRBI 
    SET HRBI.PayGroupLocationPayGroupCountryCode = 'DEU - Exec'
    WHERE 
    ( HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' 
      AND 
      HRBI.ManagementLevel IN ('VP', 'SVP', ...etc ...)
    )
    OR
    (    HRBI.WorkerID = '45' OR HRBI.WorkerID = '46' OR HRBI.WorkerID = '47' 
      OR HRBI.WorkerID = '48' OR HRBI.WorkerID = '49' OR HRBI.WorkerID = '50' 
      OR HRBI.WorkerID = '51'
    );

请注意，您可以使用 HRBI.WorkerID IN (45,46, .....) 但我会把这个留给您...

你还需要重写这个：

    UPDATE SET HRBI.PayGroupCountryDesc =         
    IIF(HRBI.PayGroupLocationPayGroupCountryCode = 'DEU - Exec'
        , "Germany -   Exec'
        ,HRBI.PayGroupCountryDesc);

也许像这样嵌入第一个SQL

    UPDATE HRBI 
    SET HRBI.PayGroupLocationPayGroupCountryCode = 'DEU - Exec'

       ,HRBI.PayGroupCountryDesc =  "Germany -   Exec'

    WHERE 
    ( HRBI.PayGroupLocationPayGroupCountryCode = 'DEU' 
      AND 
      HRBI.ManagementLevel IN ('VP', 'SVP', ...etc ...)
    )
    OR
    (    HRBI.WorkerID = '45' OR HRBI.WorkerID = '46' OR HRBI.WorkerID = '47' 
      OR HRBI.WorkerID = '48' OR HRBI.WorkerID = '49' OR HRBI.WorkerID = '50' 
      OR HRBI.WorkerID = '51'
    );

好吗？

你如何在同一个查询中更新两次？

How do you UPDATE twice within the same query?

ms-access

jet-sql