发布时间:2025-11-05 05:57:03 来源:码上建站 作者:数据库
Employee Manager Pathlen Path --------------- --------------- ---------- ------------------------------ Gietz Higgins 1 /Higgins/Gietz Gietz King 3 /King/Kochhar/Higgins/Gietz Gietz Kochhar 2 /Kochhar/Higgins/Gietz Higgins King 2 /King/Kochhar/Higgins Higgins Kochhar 1 /Kochhar/HigginsThe 何用汇总following example uses a GROUP BY clause to return the total salary of each employee in department 110 and all employees below that employee in the hierarchy: 1.2.3.4.5.6.7.

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