Question

我有一个查询，我在员工表中查找用户，并递归查看记录，找出报告我们的源输入的每个人。

我的问题是，在下面的情况中，@QID Id希望能够传递多个值，而不是传递单个值。我试图将其修改为WHERE QID IN ('user1', 'user2')，但它始终只返回它在IN子句中找到的第一个用户的数据

WITH empList(mgrQID, QID, NTID, FullName, lvl, countOfDirects)
AS
(
       SELECT TOP 1 mgrQID, QID, NTID, FirstName+' '+LastName, 0, CountOfDirects
       FROM dbo.EmployeeTable
       WHERE QID = @QID

       UNION ALL

       SELECT b.mgrQID, b.QID, b.NTID, b.FirstName+' '+b.LastName, lvl+1, b.countOfDirects
       FROM empList a
       CROSS APPLY dbo.Fetch_Directs_by_qid(a.QID)b
)

Answer 1

摆脱TOP 1并像这样做。如果您有重复值，请将分组添加到锚点查询或DISTINCT

DECLARE @QID TABLE (val VARCHAR(100));
INSERT INTO @QID VALUES ('user1'),('user2')

WITH empList(mgrQID, QID, NTID, FullName, lvl, countOfDirects)
AS
(
       SELECT mgrQID, QID, NTID, FirstName+' '+LastName, 0, CountOfDirects
       FROM dbo.EmployeeTable
       WHERE QID IN (SELECT * FROM @QID)

       UNION ALL

       SELECT b.mgrQID, b.QID, b.NTID, b.FirstName+' '+b.LastName, lvl+1, b.countOfDirects
       FROM empList a
       CROSS APPLY dbo.Fetch_Directs_by_qid(a.QID)b
)

来自多个来源的TSQL递归

1 个答案: