Continuo a ottenere un max recursion error
con questa query.
All'inizio ho pensato che fosse perché veniva restituito un null e poi avrebbe cercato di abbinare i valori null causando l'errore, ho riscritto la mia query in modo che i null non vengano restituiti e l'errore si verifica ancora.
Quale sarebbe il modo migliore per riscrivere questa funzione, in modo che l'errore non si verifichi
WITH EmployeeTree AS
(
SELECT
EMP_SRC_ID_NR Id, USR_ACV_DIR_ID_TE Uuid,
CASE Employees.APV_MGR_EMP_ID
WHEN Null THEN '0'
ELSE Employees.APV_MGR_EMP_ID
END as ApprovalManagerId
FROM
dbo.[tEmployees] as Employees WITH (NOLOCK)
WHERE
APV_MGR_EMP_ID = @Id
and Employees.APV_MGR_EMP_ID is not null
and Employees.EMP_SRC_ID_NR is not null
UNION ALL
SELECT
EMP_SRC_ID_NR Id, USR_ACV_DIR_ID_TE Uuid,
CASE Employees.UPS_ACP_EMP_NR
WHEN Null THEN '1'
ELSE Employees.UPS_ACP_EMP_NR
END as ApprovalManagerId
FROM
dbo.[tEmployees] as Employees WITH (NOLOCK)
WHERE
UPS_ACP_EMP_NR = @Id
and Employees.APV_MGR_EMP_ID is not null
and Employees.EMP_SRC_ID_NR is not null
UNION ALL
SELECT
Employees.EMP_SRC_ID_NR, Employees.USR_ACV_DIR_ID_TE,
CASE Employees.APV_MGR_EMP_ID
WHEN Null THEN '2'
ELSE Employees.APV_MGR_EMP_ID
END
FROM
dbo.[tEmployees] as Employees WITH (NOLOCK)
JOIN
EmployeeTree ON Employees.APV_MGR_EMP_ID = EmployeeTree.Id
where
Employees.APV_MGR_EMP_ID is not null
and Employees.EMP_SRC_ID_NR is not null
)
SELECT
Id AS [EmployeeId],
Uuid AS [EmployeeUuid],
ApprovalManagerId AS [ManagerId]
FROM EmployeeTree
COALESCE()
:CASE Employees.APV_MGR_EMP_ID WHEN Null THEN '0' ELSE Employees.APV_MGR_EMP_ID END as ApprovalManagerId
=COALESCE(Employees.APV_MGR_EMP_ID, 0) AS ApprovalManagerID