You misunderstood me, sorry I should have been clearer. Some internals are shared between inheritance and declarative partitioning. For v10 most parts of the sy

You misunderstood me, sorry I should have been clearer. Some internals are shared between inheritance and declarative partitioning. For v10 most parts of the system (except for COPY) used the same partition exclusion logic for both forms of partitioning. Which means it was O(partitions) with a pretty high constant.