On Wed, Apr 07, 2021 at 11:35:14PM -0700, Andres Freund wrote: > On 2021-04-08 01:41:40 -0400, Tom Lane wrote: >> Andres Freund <and...@anarazel.de> writes: >> FWIW, I think the long-term drift of things is definitely that >> we want to have the querystring available everywhere. Code like >> executor_errposition is from an earlier era before we were trying >> to enforce that. In particular, if the querystring is available in >> the leader and not the workers, then you will get different error >> reporting behavior in parallel query than non-parallel query, which >> is surely a bad thing. > > Yea, I think it's a sensible direction - but I think we should put the > line in the sand earlier on / higher up than ExecInitParallelPlan().
Indeed, I agree that enforcing the availability of querystring everywhere sounds like a sensible thing to do in terms of consistency, and that's my impression when I scanned the parallel execution code, and I don't really get why SQL function bodies should not bind by this rule. Would people object if I add an open item to track that? -- Michael
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