Sql 求总值直到达到某一点

我正在努力做到以下几点：

按具有最高值的

DIVLOC

和

DISTRIB

订购记录

然后对每个

DIVLOC

的

DISTRIB

进行汇总，直到它达到>=.60

对于每个

DIVLOC

60的记录，打开

ETAFLAG=1

下面是我的结果示例

-- --Create Fake table 
DECLARE @ETATRACTS TABLE (DIVLOC int, TRACTID int, Distrib float, ETAFLAG bit)

INSERT INTO @ETATRACTS VALUES (71001, 1123, .30, 0)
INSERT INTO @ETATRACTS VALUES (71001, 1010, .20, 0)
INSERT INTO @ETATRACTS VALUES (71001, 3010, .10, 0)
INSERT INTO @ETATRACTS VALUES (71001, 0790, .05, 0)
INSERT INTO @ETATRACTS VALUES (71001, 6010, .05, 0)
INSERT INTO @ETATRACTS VALUES (71250, 3010, .40, 0)
INSERT INTO @ETATRACTS VALUES (71250, 0610, .10, 0)
INSERT INTO @ETATRACTS VALUES (71250, 3210, .10, 0)
INSERT INTO @ETATRACTS VALUES (71250, 1920, .05, 0)
INSERT INTO @ETATRACTS VALUES (71250, 9720, .05, 0)
INSERT INTO @ETATRACTS VALUES (71250, 2110, .05, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .20, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .20, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .05, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .05, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .01, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .01, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .01, 0)
INSERT INTO @ETATRACTS VALUES (71425, 5011, .01, 0)

UPDATE @ETATRACTS
SET ETAFLAG = t.ETAFLAG
FROM @ETATRACTS AS temptable, 
     (SELECT 
          DIVLOC, TRACTID, Distrib,
          (CASE WHEN SUM(Distrib) OVER (PARTITION BY divloc) - Distrib >= 0.2
                 THEN 1
           END) AS ETAFLAG
       FROM @ETATRACTS) AS t
WHERE 
    temptable.divloc = t.DIVLOC AND temptable.TRACTID = t.TRACTID

SELECT * FROM @ETATRACTS

---

您可以为此编写

选择
查询：

select e.*,
       (case when sum(Distrib) over (partition by divloc order by Distrib desc) - Distrib < 0.6
             then 1 else 0
        end) as ETAFLAG
from @ETATRACTS e;

这太愚蠢了，但当我运行你建议的代码时，我得到了一个错误：Msg 102，15级，状态1，第28行“order”附近的语法不正确。@Bearcatrunner。所有受支持的SQL Server版本都支持累积和。您可能正在使用不受支持的版本，或者已将兼容性设置为早期版本。
with toupdate (
      select e.*,
             (case when sum(Distrib) over (partition by divloc order by Distrib desc) - Distrib < 0.6
                   then 1 else 0
              end) as new_ETAFLAG
      from @ETATRACTS e
     )
update toupdate
    set new_ETAFLAG = ETAFLAG;