On 1/22/21 5:01 AM, Justin Pryzby wrote:
On Fri, Jan 22, 2021 at 04:49:51AM +0100, Tomas Vondra wrote:
| Statistics objects:
| "public"."s2" (ndistinct, dependencies, mcv) ON FROM t
Umm, for me that prints:
"public"."s2" ON ((i + 1)), (((i + 1) + 0)) FROM t
which I think is OK. But maybe there's something else to trigger the
problem?
Oh. It's because I was using /usr/bin/psql and not ./src/bin/psql.
I think it's considered ok if old client's \d commands don't work on new
server, but it's not clear to me if it's ok if they misbehave. It's almost
better it made an ERROR.
Well, how would the server know to throw an error? We can't quite patch
the old psql (if we could, we could just tweak the query).
In any case, why are there so many parentheses ?
That's a bug in pg_get_statisticsobj_worker, probably. It shouldn't be
adding extra parentheses, on top of what deparse_expression_pretty does.
Will fix.
regards
--
Tomas Vondra
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