SQL Server 从两个表中插入更新

Question

我有 2 个表 Winner 和 player ，包含标准信息(姓氏，名字，ID ...)加上两个 bool 列 Validity 和 WinnerState(默认为 0)。

我想做的是创建一个 SQL Server 程序，它会从 Players 表中随机选择一条记录，然后将其插入 Winner 表，同时更新在 player 表中所选记录的 WinnerState 列。

Winner 表包含 Player 的外键，以跟踪所选玩家。

我已经尝试过一种方法，但它会为所有玩家表更新此列:

create procedure selectUpdate
    As
    insert into Winner (Fname,Lname,Adress,City,Tel,Player_ID) from
    select TOP 1 (Fname,Lname,Adress,City,Tel,ID) from Player order by NEWID()
    Update Player
    SET WinnerState=1

如何让它只更新随机选择的记录？谢谢!

Answer 1

您可以在一条语句中完成所有操作:

create procedure selectUpdate
as
begin
    set nocount on

    ;with p as (
       select top 1 Fname,Lname,Adress,City,Tel,ID,WinnerState
       from Player
       where WinnerState = 0 -- this is necessary I assume
       order by checksum(NEWID())
    )
    update p
    set WinnerState = 1
    output
        inserted.Fname,
        inserted.Lname,
        inserted.Adress,
        inserted.City,
        inserted.Tel,
        inserted.ID into Winner (Fname,Lname,Adress,City,Tel,Player_ID)
end