MS SQL将max（）-1添加到qyery

如何添加到查询maxo.Acct-1行。我需要可视化最后两个o.Acct行。我的查询当前仅显示maxo.Acct

SELECT Max(o.Acct) AS [MaxAcct],o.ObjectID,o.Opertype
FROM Operations o
GROUP By o.ObjectID,o.Opertype

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如果你想要最后两个，我想按顺序排列。大概是这样的：

select top (2) o.*
from Operations o
order by o.acct desc;

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如果要查看每组的最后两行，最好使用ROW_NUMBER，而不是group BY

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Maxo.Acct-1是[MaxAcct减1]吗？请更清楚地描述您的请求。示例数据和期望的结果会有所帮助。虽然不清楚，但我认为OP希望每个ObjectID/Opertype有两行，而不仅仅是两行。

SELECT
  *
FROM
(
  SELECT
    *,
    ROW_NUMBER() OVER (PARTITION BY ObjectID,
                                    Opertype
                           ORDER BY Acct DESC
                      )
                         AS sequence_id
  FROM
    Operations
)
  sortedOperations
WHERE
  sequence_id <= 2
ORDER BY
  ObjectID,
  Opertype,
  Acct