On Fri, Apr 10, 2026 at 11:38:50PM +0900, Richard Guo wrote: > Nice catch. It seems that we need at least three branches to > reproduce this, so that there's a nested UNION ALL whose output type > doesn't match the parent's expected type. At the outer branch maybe > we can use NULL::bigint[] instead to be a little simpler.
Indeed, three branches: $ git branch --contains 9391f7152 + REL_17_STABLE + REL_18_STABLE * master -- Michael
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