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(parent: 495e73c) | patch

Fix planner failure with extended statistics on partitioned tables.

Fix planner failure with extended statistics on partitioned tables.

Some cases would result in "cache lookup failed for statistics object",
due to trying to fetch inherited statistics when only non-inherited
ones are available or vice versa.

Richard Guo and Justin Pryzby

Discussion: https://postgr.es/m/20221030170520.GM16921@telsasoft.com

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