Question

我们需要通过SQL将“活动”帐户记录的层次结构返回为特定格式。

以下是我的示例数据和预期结果的链接：SAMPLEDATA

注意事项：

如果该帐户的父级为“非活动状态”，则该父级帐户为空白
Root Parent将是最活跃的父母
无效帐户将从表中删除

我已经掌握了帐户的整个层次结构（递归CTE）。但是，问题出在父帐户和“根”列。如果层次结构复杂或父母不活跃，我似乎无法为其获取正确的值。（例如，如果最上层的父级处于非活动状态，或者有多个父级帐户而某些处于非活动状态）

我尝试为这些列使用子查询，但是我认为我仍然缺少某些东西...

有人可以用正确的方法启发我吗？预先感谢！

这是我的剧本：

WITH aCTE ([Client Number], [Client Level], accountid) AS
(
SELECT
  ROW_NUMBER() OVER (ORDER BY parentaccountid ASC) [Client Number]
  ,0 [Client Level]
  ,accountid
FROM
  Account
WHERE
  parentaccountid IS NULL

UNION ALL

SELECT
  b.[Client Number]
  ,b.[Client Level] + 1
  ,a.accountid
FROM
  Account a
  JOIN aCTE b ON a.parentaccountid = b.accountid
WHERE
  a.statecode = 0 --Active
)

SELECT DISTINCT
  ac.[Client Number]
  ,ac.[Client Level]
  ,fa.accountnumber [Account Number]
  ,fa.[name] [Account Name]
  ,[Parent Account] = CASE 
    WHEN (SELECT TOP 1 a.[name] FROM Account a JOIN aCTE b ON a.accountid = b.accountid 
        WHERE b.[Client Number] = ac.[Client Number]
        ORDER BY b.[Client Level] ASC) != fa.[name]
    THEN fa.parentaccountidname
    ELSE ''
  END 
  ,[Root Parent Number] = (SELECT TOP 1 a.accountnumber FROM Account a JOIN aCTE b ON a.accountid = b.accountid 
  WHERE b.[Client Number] = ac.[Client Number]
  ORDER BY b.[Client Level] ASC) 
  ,[Root Parent Name] = (SELECT TOP 1 a.[name] FROM Account a JOIN aCTE b ON a.accountid = b.accountid 
  WHERE b.[Client Number] = ac.[Client Number]
  ORDER BY b.[Client Level] ASC) 
FROM
  FilteredAccount fa
  JOIN aCTE ac ON fa.accountid = ac.accountid
WHERE 
  fa.statecode = 0 --Active
ORDER BY
  ac.[Client Number] ASC
  ,ac.[Client Level] ASC

在SQL中返回过滤的层次结构-CTE / SubQuery

0 个答案: