On Thu, 30 Sept 2021 at 20:25, Amit Langote <amitlangot...@gmail.com> wrote: > Related to the above, I noticed while looking at > build_merged_partition_bounds() that db632fbca3 missed adding a line > to that function to set interleaved_parts to NULL. Because the > PartitionBoundInfo is only palloc'd (not palloc0'd), interleaved_parts > of a "merged" bounds struct ends up pointing to garbage, so let's fix > that. Attached a patch.
Thanks for the patch. I think we also need to document that interleaved_parts is not set for join relations, otherwise someone may in the future try to use that field for an optimisation for join relations. At the moment, per generate_orderedappend_paths, we only handle IS_SIMPLE_REL type relations. I've attached a patch that updates the comments to mention this. David
initialize-inteleaved_parts_v2.patch
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