Question

我想要所有的孙子，以下逻辑适用于我，但由于这是一个视图，我无法传递参数xxx

SQL代码：

WITH grandchildren as
(
    SELECT e1.ID ID, e1.LName + ', '+e1.FName FullName, 0 as lvl
    FROM lstEmp e1
    WHERE e1.ID ='xxx'
    UNION ALL
    SELECT e2.ID, e2.LName + ', '+e2.FName, lvl+1
    FROM lstEmp e2  
    INNER JOIN grandchildren g ON e2.Supervisor = g.LsuID
)
SELECT *
FROM grandchildren
ORDER BY lvl, ID;

我需要以where条件获得此输出吗？

Answer 1

在where内或grandchildren下方插入from，这应该可行。

WITH grandchildren as
(
    SELECT e1.ID ID, e1.LName + ', '+e1.FName FullName, 0 as lvl
    FROM lstEmp e1
    WHERE e1.ID ='xxx'
    UNION ALL
    SELECT e2.ID, e2.LName + ', '+e2.FName, lvl+1
    FROM lstEmp e2  
    WHERE e2.LName = 'nameToFilter'
    INNER JOIN grandchildren g ON e2.Supervisor = g.LsuID
)
SELECT *
FROM grandchildren
ORDER BY lvl, ID;

从cte视图中获取所有儿童

1 个答案: