Question

当我在SQL Server 2005中的CTE中使用表变量时，我遇到以下错误。当我使用物理表时，它工作正常。

必须声明表变量“@Employee” '）'附近的语法不正确。

代码：

DECLARE @Emploee TABLE (EmpID INT, EmpName VARCHAR(50), Dept VARCHAR(5), Manager INT)

INSERT INTO @Emploee VALUES (1, 'A', NULL,NULL)
INSERT INTO @Emploee VALUES (2, 'B', 'D100',NULL)

;WITH EmployeeManagers AS 
(
  SELECT e.EmpId, e.EmpName, 1 AS Level
       , e.Manager, e.EmpID CurrLevelEmpID, Cast(Null as VarChar(5)) Dept
  FROM   @Employee AS e
  WHERE  e.Manager IS NOT NULL

  UNION ALL

  SELECT em.EmpId, em.EmpName, Level + 1 AS Level
       , e.Manager, e.EmpID CurrLevelEmpID, e.Dept Dept
  FROM   EmployeeManagers em
         INNER JOIN Employee e ON e.EmpId = em.Manager
)
SELECT * FROM EmployeeManagers

我们如何解决此错误？

参考

How to use table variable in a dynamic sql statement?

Answer 1

DECLARE @Emploee TABLE (EmpID INT, EmpName VARCHAR(50), Dept VARCHAR(5), Manager INT)

INSERT INTO @Emploee VALUES (1, 'A', NULL,NULL)
INSERT INTO @Emploee VALUES (2, 'B', 'D100',NULL)

;WITH EmployeeManagers AS 
(
  SELECT e.EmpId, e.EmpName, 1 AS Level
       , e.Manager, e.EmpID CurrLevelEmpID, Cast(Null as VarChar(5)) Dept
  FROM   @Emploee AS e         --<-- Wrong Spellings here
  WHERE  e.Manager IS NOT NULL

  UNION ALL

  SELECT em.EmpId, em.EmpName, Level + 1 AS Level
       , e.Manager, e.EmpID CurrLevelEmpID, e.Dept Dept
  FROM   EmployeeManagers em
         INNER JOIN @Emploee  e ON e.EmpId = em.Manager  --<-- Mising @ sign here
)
SELECT * FROM EmployeeManagers

Answer 2

你有一个错字：

DECLARE @Emploee TABLE (EmpID INT, EmpName VARCHAR(50), Dept VARCHAR(5), Manager INT)

INSERT INTO @Emploee VALUES (1, 'A', NULL,NULL)
INSERT INTO @Emploee VALUES (2, 'B', 'D100',NULL)

应该是@Employee

“必须声明表变量”CTE出错

2 个答案: