Question

我想做一个SELECT来获取ID列表，根据这些ID进行更新，然后返回这些记录。

我猜这样的事情，我只是不知道语法：

  SELECT WebHookLogIDs = FROM WebHookLog 
                WHERE Processing=0
                    AND Processed=0
                        AND Paused=0
                            ORDER BY FailCount ASC, WebHookLogID DESC

    UPDATE WebHookLog
        SET Processing = 1
            WHERE WebHookLogID IN(WebHookLogIDs)

    SELECT * FROM WebHookLog 
            WHERE WebHookLogID IN(WebHookLogIDs)

Answer 1

我认为将数据放在 Temp表中比在其中插入数据更好

因为最后你想要返回那些记录，所以你需要使用临时表

DECLARE @Table1 TABLE (WebHookLogIDs INT)

Insert into @Table1(WebHookLogIDs )
SELECT WebHookLogIDs  FROM WebHookLog 
                WHERE Processing=0
                    AND Processed=0
                        AND Paused=0
                            ORDER BY FailCount ASC, WebHookLogID DESC

    UPDATE WebHookLog
        SET Processing = 1
            WHERE WebHookLogID IN( select WebHookLogIDs from @Table1)

    SELECT * FROM WebHookLog 
            WHERE WebHookLogID IN(select WebHookLogIDs from @Table1)
    DROP TABLE @Table1

Answer 2

您不能UPDATE SELECT使用相同的SQL语句。但是，UPDATE可以使用JOIN而不是像这样选择ID：

UPDATE w1
SET w1.Processing = 1
FROM WebHookLog w1
INNER JOIN WebHookLog w2  ON w1.WebHookLogID = w2.WebHookLogID 
                         AND w2.Processing    = 0
                         AND w2.Processed     = 0
                         AND w2.Paused        = 0;

稍后，您可以执行另一个SELECT条款。

Answer 3

这样的东西？

UPDATE WebHookLog
SET PROCESSING = 1
WHERE WebHookLogID IN ( SELECT WebHookLogIDs = FROM WebHookLog 
                WHERE Processing=0
                    AND Processed=0
                        AND Paused=0)

SELECT * FROM WebHookLog 
WHERE WebHookLogID IN(WebHookLogIDs)

SELECT然后更新这些记录，然后在STORED PROCEDURE中返回它们

3 个答案: