Tsql 如何一次用值列表更新表？

我有

我这样试过-

update NewLeaderBoards set MonthlyRank=(Select RowNumber() (order by TotalPoints desc) from LeaderBoards) 

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但它对我不起作用。有人能建议我如何以这种方式执行更新吗？

您需要使用WITH语句和完整的CTE：

(Select RowNumber() (order by TotalPoints desc) from LeaderBoards) as NewRanks 
 update NewLeaderBoards set MonthlyRank = NewRanks

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是的，如果我没记错的话，它被称为updatefrom语句。

;With Ranks As
    (
    Select PrimaryKeyColumn, Row_Number() Over( Order By TotalPoints Desc ) As Num
    From LeaderBoards
    )
Update NewLeaderBoards
Set MonthlyRank = T2.Num
From NewLeaderBoards As T1
    Join Ranks As T2
        On T2.PrimaryKeyColumn = T1.PrimaryKeyColumn