Question

我想使用递归查询（它可以是cte或任何东西）我试图提取执行报告 - 我输入一个员工姓名，我希望所有与该员工相关的层次结构从顶级的emloyee（从首席执行官开始）然后下降。

例如：

如果我输入员工姓名Celia，报告应如下所示：

CEO
Employees reporting to CEO , let's say MgrX
Employees reporting to MgrX- let's say MgrY
Employees reporting to MgrY - let's say MgrZ

所有向MgrZ报告的员工，包括Celia（输入参数）。

我正在尝试使用的查询：

            with cte1 as 
            (

            select 
            pa.PERSNBR
            ,pa.AUTHCD
            ,pu.VALUE
            ,hr.File#
            ,hr.[Payroll Name]
            ,hr.[Reports To File#]
            ,hr.[Reports To Name]
            ,hr.[EMC #]
            ,hr.[EMC Name]

            from 
                    [DNA_Staging].[dbo].[PERSAUTH] pa
            join    [DNA_Staging].[dbo].[PERSEMPL] pe
                on  pa.PERSNBR = pe.PERSNBR
            join    [DNA_Staging].[dbo].[PERSUSERFIELD] pu
                on  pe.PERSNBR = pu.PERSNBR
                and pu.USERFIELDCD = 'EFNR'
                and GETDATE() < isnull(pe.inactivedate,getdate()+1)
              join  [HR_Staging].[dbo].[HR_EmployeeHierarchyStaging] hr
                on  pu.VALUE = substring(hr.File#,2,6)
                or  pu.VALUE = substring(hr.File#,3,6)

                ),

                -- find all the data for input payroll name in the parameter
                cte2 as (select *
                FROM cte1 where [Payroll Name] = 'Acain, Celia T'),

Answer 1

您问题的基本示例（您尚未提供任何数据样本或输出示例，因此......）：

DECLARE @name nvarchar(20) = 'Darkwater'

;WITH emplevels AS (
SELECT *
FROM (VALUES
(1, 'CEO'),
(2, 'MgrX'),
(3, 'MgrY'),
(4, 'MgrZ')
) as t(eid, who)
),
people AS ( --people and there levels
SELECT *
FROM (VALUES
(1, 'Smith', 1),
(2, 'Wake', 2),
(3, 'Cartman', 3),
(4, 'Sanders', 4),
(5, 'MacCormic', 1),
(6, 'Malkovich', 2),
(7, 'Whatever', 2),
(8, 'Darkwater', 3),
(9, 'Leto', 4)
) as t(pid, name, eid)
),
dep AS ( --dependences of levels
SELECT *
FROM (VALUES
(1,1), --CEO - CEO
(1,2), --CEO - MgrX
(2,3), --MgrX - MgrY
(3,4)  --MgrY - MgrZ
)as t(eid1,eid2)
),
hier as ( -- get the hierarchy 
SELECT  d.eid1,
        d.eid2
FROM dep d 
LEFT JOIN people p ON d.eid2 = p.eid
where name = @name
UNION ALL
SELECT  d.eid1,
        d.eid2
FROM dep d
INNER JOIN hier h ON d.eid2 = h.eid1 
WHERE d.eid2 != d.eid1
)
--here comes heads and who there are
SELECT  p.name AS Head,
        e.who AS WhoIs
from hier h
LEFT JOIN people p ON p.eid = h.eid1
LEFT JOIN emplevels e ON e.eid = p.eid
ORDER BY e.eid

Darkwater的结果（他是MgrY）。我们拥有MgrX和CEO的所有内容：

Head      WhoIs
--------- -----
Smith     CEO
MacCormic CEO
Wake      MgrX
Malkovich MgrX
Whatever  MgrX

(5 row(s) affected)

T-SQL-递归查询 - 员工层次结构

1 个答案: