If the result isn't like this, then the multiple path is not open.
如果得出不同的结果,那么可能是因为没有打开多个路径。
For a given SQL statement, there are often multiple access path choices, and the different access paths usually have different performance characteristics.
对于一个给定的sql语句,往往有多个访问路径选择,而不同的访问路径具有不同的性能特点。
This is done to maintain the uniqueness of the path in multiple logical node configurations.
这样做是为了维护多逻辑节点配置中路径的惟一性。
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