Always reproduced (ClickHouse server version 22.3.2.1):
`
udf code, python version 3.9.6
#!/usr/bin/python

import sys
import time

if __name__ == '__main__':
    for line in sys.stdin:
        print("Python4 " + line, end='')
        sys.stdout.flush()
`

SELECT test_function_python('clickhouse')

Query id: 57da3834-1238-4da6-a984-48d4c1bb4a04

┌─test_function_python('clickhouse')─┐
│ Python4 clickhouse                 │
└────────────────────────────────────┘

1 rows in set. Elapsed: 0.001 sec.

SELECT test_function_python('clickhouse') AS uuu
GROUP BY uuu

Query id: c14131e5-e7aa-4585-a9f5-8e4b3e29fe44


0 rows in set. Elapsed: 0.002 sec.

Received exception from server (version 22.3.2):
Code: 46. DB::Exception: Received from 10.254.134.108:9000. DB::Exception: Unknown function test_function_python. (UNKNOWN_FUNCTION)


SELECT uuu
FROM
(
    SELECT test_function_python('clickhouse') AS uuu
) AS tmp
GROUP BY uuu

Query id: 20ca737b-35e1-418a-ab8e-2a296ac44e28

┌─uuu────────────────┐
│ Python4 clickhouse │
└────────────────────┘

1 rows in set. Elapsed: 0.002 sec.
{
    if (!select.select() || select.select()->children.empty())
        return;
    const ASTSelectQuery * subselect = getSimpleSubselect(select);
    if (!subselect)
        return;
    std::unordered_set<String> distinct_names = getDistinctNames(*subselect);
    std::unordered_set<String> selected_names;
    
    for (const auto & id : select.select()->children)
    {
        const auto * identifier = id->as<ASTIdentifier>();
        if (!identifier)
            return;
        String name = identifier->shortName();
        if (!distinct_names.contains(name))
            return; 
        selected_names.insert(name);
    }
    
    
    if (selected_names.size() != distinct_names.size())
        return;
    select.distinct = false;
}
void optimizeMonotonousFunctionsInOrderBy(ASTSelectQuery * select_query, ContextPtr context,