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help / color / mirror / Atom feedFrom: Tom Lane <[email protected]>
To: [email protected]
Subject: pgsql: Don't try to parallelize array_agg() on an anonymous record type
Date: Sun, 09 Mar 2025 17:11:33 +0000
Message-ID: <[email protected]> (raw)
Don't try to parallelize array_agg() on an anonymous record type.
This doesn't work because record_recv requires the typmod that
identifies the specific record type (in our session) and
array_agg_deserialize has no convenient way to get that information.
The result is an "input of anonymous composite types is not
implemented" error.
We could probably make this work if we had to, but it does not seem
worth the trouble, given that it took this long to get a field report.
Just shut off parallelization, as though record_recv didn't exist.
Oversight in commit 16fd03e95. Back-patch to v16 where that
came in.
Reported-by: Kirill Zdornyy <[email protected]>
Diagnosed-by: Richard Guo <[email protected]>
Author: Tom Lane <[email protected]>
Reviewed-by: David Rowley <[email protected]>
Discussion: https://postgr.es/m/atLI5Kce2ie1zcYjU0w_kjtVaxiYbYGTihrkLDmGZQnRDD4pnXukIATaABbnIj9pUnelC4ESvCXMm4HA...
Backpatch-through: 16
Branch
------
REL_17_STABLE
Details
-------
https://git.postgresql.org/pg/commitdiff/43847dd5e93816ef6e37dfb6c8bb7f98f48ddc01
Modified Files
--------------
src/backend/parser/parse_agg.c | 11 ++++++++++-
src/test/regress/expected/aggregates.out | 20 +++++++++++++++++++-
src/test/regress/sql/aggregates.sql | 9 +++++++--
3 files changed, 36 insertions(+), 4 deletions(-)
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Subject: Re: pgsql: Don't try to parallelize array_agg() on an anonymous record type
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