sql字符串获取最小值最小值的最大值

Question

我有两个表，我希望有一个sql查询来获取表的最大值的并集的字段的最小值。

Set tmpRS = CurrentDb.OpenRecordset(" SELECT MIN(s.TorqueMax) FROM ( " & _
    " (SELECT MAX(ds.TorqueMax) FROM tblUIOpTorqueRangeDS ds)" & _
    " UNION " & _
    " (SELECT MAX(cv.TorqueMax) FROM tblUIOpTorqueRangeCV cv )) as s")

Answer 1

您可以执行以下操作：

SELECT MIN(s.TorqueMax)
FROM (SELECT MAX(ds.TorqueMax) as TorqueMax
      FROM tblUIOpTorqueRangeDS ds
      UNION 
      SELECT MAX(cv.TorqueMax) as TorqueMax
      FROM tblUIOpTorqueRangeCV cv
     ) as s;