更新中的SQL选择查询

Question

我正在尝试解决此查询：

1. 我有一个更新查询。

   UPDATE controll_SZHEAD14 
   LEFT JOIN [outgoing] ON controll_SZHEAD14.sa_code = [outgoing].Account 
   SET [outgoing].Account = controll_SZHEAD14.sa_code, [outgoing].Buyer = controll_SZHEAD14.sa_buyername, [outgoing].startdate = controll_SZHEAD14.sa_date, [outgoing].Finance = controll_SZHEAD14.sa_tedat, [outgoing].maxdate = controll_SZHEAD14.sa_esdat, [outgoing].[25alap] = controll_SZHEAD14.sa_summary
   WHERE (((controll_SZHEAD14.sa_code)>"BA14/01997"));
   

   因此，如果我在上面运行此查询，则不刷新数据，但仅从BA14 / 01997起至今。因此，在此示例中，这将刷新66行。 （受影响的66行）

2. 我有这个简单的选择SQL：

   SELECT TOP 1 Account FROM [outgoing] ORDER BY Account DESC;
   

   如果我在上面运行此程序，则得到了最后一个帐户，在此示例中：BA14 / 01997

3. 所以我想将这两个查询一起“ update + select”。

   UPDATE controll_SZHEAD14 
   LEFT JOIN [outgoing] ON controll_SZHEAD14.sa_code = [outgoing].Account 
   SET [outgoing].Account = controll_SZHEAD14.sa_code, [outgoing].Buyer = controll_SZHEAD14.sa_buyername, [outgoing].startdate = controll_SZHEAD14.sa_date, [outgoing].Finance = controll_SZHEAD14.sa_tedat, [outgoing].maxdate = controll_SZHEAD14.sa_esdat, [outgoing].[25alap] = controll_SZHEAD14.sa_summary
   WHERE (((controll_SZHEAD14.sa_code)>"SELECT TOP 1 Account FROM [outgoing] GROUP BY Account DESC;")); 
   

   以上查询无法正常工作。运行时，受影响的行为0，但我希望与第一个更新查询相同。

任何想法如何解决此问题？

Answer 1

将SELECT语句括在（）中

UPDATE controll_SZHEAD14 
LEFT JOIN [outgoing] 
ON controll_SZHEAD14.sa_code = [outgoing].Account 
SET [outgoing].Account = controll_SZHEAD14.sa_code, 
    [outgoing].Buyer = controll_SZHEAD14.sa_buyername, 
    [outgoing].startdate = controll_SZHEAD14.sa_date, 
    [outgoing].Finance = controll_SZHEAD14.sa_tedat, 
    [outgoing].maxdate = controll_SZHEAD14.sa_esdat, 
    [outgoing].[25alap] = controll_SZHEAD14.sa_summary 
WHERE controll_SZHEAD14.sa_code > (
                                    SELECT TOP 1 Account 
                                    FROM [outgoing] 
                                    ORDER BY Account DESC
                                  );