DESCRIBE return wrong result for sumMap/minMap/maxMap

[alrocar]

I'd expect a DESCRIBE on a sumMap agg function to return

AggregateFunction(sumMap, Tuple(Array(UInt32), Array(UInt32)))

but in recent versions is returning:

AggregateFunction(1, sumMap, Tuple(Array(UInt32), Array(UInt32)))

See example:

SELECT version()

Query id: 72a9cc69-7bd0-4b64-b7ce-e3634e238291

┌─version()─┐
│ 21.11.1.1 │
└───────────┘

1 rows in set. Elapsed: 0.002 sec.

localhost :)  describe (select sumMapState(([rand()], [rand()])));

DESCRIBE TABLE
(
    SELECT sumMapState(([rand()], [rand()]))
)

Query id: 2b9fc06f-640a-42b0-a6a9-4f133230109a

┌─name─────────────────────────────────────────────┬─type───────────────────────────────────────────────────────────┬─default_type─┬─default_expression─┬─comment─┬─codec_expression─┬─ttl_expression─┐
│ sumMapState(tuple(array(rand()), array(rand()))) │ AggregateFunction(sumMap, Tuple(Array(UInt32), Array(UInt32))) │              │                    │         │                  │                │
└──────────────────────────────────────────────────┴────────────────────────────────────────────────────────────────┴──────────────┴────────────────────┴─────────┴──────────────────┴────────────────┘

1 rows in set. Elapsed: 0.002 sec.

SELECT version()

Query id: 66449025-c544-47ae-9c17-655813820200

┌─version()──┐
│ 21.12.3.32 │
└────────────┘

1 rows in set. Elapsed: 0.003 sec.

runner--project-0-concurrent-0 :) describe (select sumMapState(([rand()], [rand()])))

DESCRIBE TABLE
(
    SELECT sumMapState(([rand()], [rand()]))
)

Query id: bc1bf0fe-8412-463d-93fd-1804f0413d5d

┌─name─────────────────────────────────────────────┬─type──────────────────────────────────────────────────────────────┬─default_type─┬─default_expression─┬─comment─┬─codec_expression─┬─ttl_expression─┐
│ sumMapState(tuple(array(rand()), array(rand()))) │ AggregateFunction(1, sumMap, Tuple(Array(UInt32), Array(UInt32))) │              │                    │         │                  │                │
└──────────────────────────────────────────────────┴───────────────────────────────────────────────────────────────────┴──────────────┴────────────────────┴─────────┴──────────────────┴────────────────┘

1 rows in set. Elapsed: 0.003 sec.

[alexey-milovidov]

This is absolutely correct and indicates that the first version of the sumMap aggregate function is using.
See #12552.

[alrocar]

I see, thanks!