试图找出前80％的使用率

Question

我从另一篇很老的帖子中得到了这段代码。除了我传递92k记录外，代码完美无缺。当我用几条记录测试它时，结果是正确的，但是当我用完整的数据集进行测试时，它会给出错误。

    SELECT Part_Number,  SUM(TL52) AS T12
      into #pdtemp
      FROM TBLPARTDATA
      GROUP BY NAV_PN
      ORDER BY 2 DESC



   CREATE NONCLUSTERED INDEX [#pdtemp_NAV_PN] ON [dbo].[#pdtemp] ([NAV_PN] ASC)
                WITH (
                      PAD_INDEX = OFF
                      , STATISTICS_NORECOMPUTE = OFF
                      , SORT_IN_TEMPDB = OFF
                      , IGNORE_DUP_KEY = OFF
                      , DROP_EXISTING = OFF
                      , ONLINE = OFF
                      , ALLOW_ROW_LOCKS = ON
                      , ALLOW_PAGE_LOCKS = ON
                      ) ON [PRIMARY]


   CREATE NONCLUSTERED INDEX [#pdtemp_T12] ON [dbo].[#pdtemp] ([T12] ASC)
                WITH (
                      PAD_INDEX = OFF
                      , STATISTICS_NORECOMPUTE = OFF
                      , SORT_IN_TEMPDB = OFF
                      , IGNORE_DUP_KEY = OFF
                      , DROP_EXISTING = OFF
                      , ONLINE = OFF
                      , ALLOW_ROW_LOCKS = ON
                      , ALLOW_PAGE_LOCKS = ON
                      ) ON [PRIMARY]


    DECLARE @percent DECIMAL (20, 16) 



    SET @percent = 0.8
    SELECT DISTINCT s.Part_Number, 
                     s.t12, 
                     s.t12 + Coalesce(SUM(s2.t12) OVER (PARTITION BY s.t12), 0) 
                     runningsum 
     into #sums                
     FROM   #pdtemp s 
            LEFT JOIN #pdtemp s2 
              ON s.t12 < s2.t12 

    SELECT NAV_PN, 
        t12, 
        runningsum, 
        CAST(runningsum AS DECIMAL(15, 5)) / tots.total 
        running_percent, 
        Row_number() OVER (ORDER BY runningsum, Part_Number ) rn
    into  #percents         
    FROM   #sums, 
        (SELECT SUM(t12) total 
        FROM   #pdtemp) AS tots

    SELECT p.Part_Number,
        p.t12,
        p.running_percent,
        p.rn 
        FROM   #percents p 
    CROSS JOIN (SELECT MAX(rn) rn 
        FROM   #percents 
        WHERE  running_percent = @percent) exactpercent 

    LEFT JOIN (SELECT MAX(rn) rn 
        FROM   #percents 
        WHERE  running_percent <= @percent) underpercent 
     ON p.rn <= underpercent.rn 
        OR ( exactpercent.rn IS NULL 
        AND p.rn <= underpercent.rn + 1 ) 
    WHERE 
    underpercent.rn is not null or p.rn = 1 

我还尝试运行此操作，其中临时表是子选择并且它不运行。