SQL_一个根据查询结果更新数据的存储过程

--F_BookId
DECLARE @F_BookId INT;
--Sum(F_Count)
DECLARE @SumCount INT;
--游标1
DECLARE cursor1 CURSOR FOR
SELECT F_BookId
FROM T_Warehouse
GROUP BY F_BookId
HAVING SUM(F_Count) !=
(
    -- 取出最后一条stock信息
    SELECT a.F_Stock AS F_Stock
    FROM T_Warehouse a,
    (
        SELECT F_BookId,
               MAX(F_Time) AS F_Time
        FROM T_Warehouse
        GROUP BY F_BookId
    ) b
    WHERE a.F_BookId = b.F_BookId
          AND a.F_Time = b.F_Time
          AND a.F_BookId = dbo.T_Warehouse.F_BookId
);


OPEN cursor1;
FETCH NEXT FROM cursor1
INTO @F_BookId;

WHILE @@fetch_status = 0
BEGIN
    SELECT @SumCount = SUM(F_Count)
    FROM T_Warehouse AS TW
    GROUP BY F_BookId
    HAVING SUM(F_Count) !=
    (
        -- 取出最后一条stock信息
        SELECT a.F_Stock AS F_Stock
        FROM T_Warehouse a,
        (
            SELECT F_BookId,
                   MAX(F_Time) AS F_Time
            FROM T_Warehouse T1
            WHERE T1.F_BookId = @F_BookId
            GROUP BY F_BookId
        ) b
        WHERE a.F_BookId = b.F_BookId
              AND a.F_Time = b.F_Time
              AND a.F_BookId = TW.F_BookId
    );
    SELECT @F_BookId AS FookId,@SumCount AS SumCount

    --更新操作！！！

    --UPDATE dbo.T_Warehouse
    --SET F_Stock = @SumCount
    --WHERE  Id IN (
    --  SELECT MAX(Id)
    --  FROM T_Warehouse
    --  WHERE F_BookId = @F_BookId
    --  GROUP BY F_BookId
    --)

    FETCH NEXT FROM cursor1
    INTO @F_BookId;
END;
CLOSE cursor1;
DEALLOCATE cursor1;

客户遇到一些数据不准的问题，给客户纠正一下。 就拼凑了这个存储过程