ClickHouse client version 20.3.7.46 (official build).
Connecting to localhost:9000 as user default.
Connected to ClickHouse server version 20.3.7 revision 54433.

SELECT
    database,
    count() AS cnt
FROM cluster(test_cluster_two_shards_localhost, system, parts)
GROUP BY database
HAVING (max(active) > 0) AND (min(rows) < 1000)
SETTINGS enable_optimize_predicate_expression = 0

┌─database─┬──cnt─┐
│ db       │ 1433 │
│ system   │ 2494 │
└──────────┴──────┘

SELECT
    database,
    count() AS cnt
FROM cluster(test_cluster_two_shards_localhost, system, parts)
GROUP BY database
HAVING (max(active) > 0) AND (min(rows) < 1000)
SETTINGS enable_optimize_predicate_expression = 1

Ok.

SELECT
    name,
    count() AS cnt
FROM cluster(test_cluster_two_shards_localhost, system, settings)
GROUP BY name
HAVING (max(value) > '9') AND (min(changed) = 0)
SETTINGS enable_optimize_predicate_expression = 0

┌─name──────────────────────────┬─cnt─┐
│ send_logs_level               │   6 │
│ date_time_input_format        │   6 │
│ group_by_overflow_mode        │   6 │
│ read_overflow_mode            │   6 │
│ join_default_strictness       │   6 │
│ join_algorithm                │   6 │
│ result_overflow_mode          │   6 │
│ set_overflow_mode             │   6 │
│ distributed_product_mode      │   6 │
│ format_custom_escaping_rule   │   6 │
│ max_threads                   │   6 │
│ sort_overflow_mode            │   6 │
│ network_compression_method    │   6 │
│ distinct_overflow_mode        │   6 │
│ count_distinct_implementation │   6 │
│ timeout_overflow_mode         │   6 │
│ max_alter_threads             │   6 │
│ transfer_overflow_mode        │   6 │
│ join_overflow_mode            │   6 │
│ totals_mode                   │   6 │
└───────────────────────────────┴─────┘

20 rows in set.

SELECT
    name,
    count() AS cnt
FROM cluster(test_cluster_two_shards_localhost, system, settings)
GROUP BY name
HAVING (max(value) > '9') AND (min(changed) = 0)
SETTINGS enable_optimize_predicate_expression = 1

Received exception from server (version 20.3.7):
Code: 386. DB::Exception: Received from localhost:9000. DB::Exception: There is no supertype for types String, UInt8 because some of them are String/FixedString and some of them are not.

SELECT
    name,
    count() AS cnt
FROM cluster(test_cluster_two_shards_localhost, system, settings)
GROUP BY name
HAVING max(value) > '9'
SETTINGS enable_optimize_predicate_expression = 1

┌─name──────────────────────────┬─cnt─┐
│ send_logs_level               │   6 │
│ date_time_input_format        │   6 │
│ group_by_overflow_mode        │   6 │
│ read_overflow_mode            │   6 │
│ join_default_strictness       │   6 │
│ join_algorithm                │   6 │
│ result_overflow_mode          │   6 │
│ set_overflow_mode             │   6 │
│ distributed_product_mode      │   6 │
│ format_custom_escaping_rule   │   6 │
│ max_threads                   │   6 │
│ sort_overflow_mode            │   6 │
│ load_balancing                │   6 │
│ network_compression_method    │   6 │
│ distinct_overflow_mode        │   6 │
│ count_distinct_implementation │   6 │
│ timeout_overflow_mode         │   6 │
│ max_alter_threads             │   6 │
│ transfer_overflow_mode        │   6 │
│ join_overflow_mode            │   6 │
│ totals_mode                   │   6 │
└───────────────────────────────┴─────┘

21 rows in set.

2020.05.01 12:30:36.409540 [ 13386 ] {} <Error> HTTPHandler: Code: 386, e.displayText() = DB::Exception: There is no supertype for types String, UInt8 because some of them are String/FixedString and some of them are not, Stack trace (when copying this message, a
lways include the lines below):

0. Poco::Exception::Exception(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int) @ 0x10541260 in /usr/bin/clickhouse
1. DB::Exception::Exception(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int) @ 0x8f3f72d in /usr/bin/clickhouse
2. ? @ 0xcf7b68e in /usr/bin/clickhouse
3. DB::FunctionComparison<DB::EqualsOp, DB::NameEquals>::executeGeneric(DB::Block&, unsigned long, DB::ColumnWithTypeAndName const&, DB::ColumnWithTypeAndName const&) @ 0x9eb39e7 in /usr/bin/clickhouse
4. DB::FunctionComparison<DB::EqualsOp, DB::NameEquals>::executeImpl(DB::Block&, std::__1::vector<unsigned long, std::__1::allocator<unsigned long> > const&, unsigned long, unsigned long) @ 0x9feeb82 in /usr/bin/clickhouse
5. DB::ExecutableFunctionAdaptor::execute(DB::Block&, std::__1::vector<unsigned long, std::__1::allocator<unsigned long> > const&, unsigned long, unsigned long, bool) @ 0x91a91d1 in /usr/bin/clickhouse
6. DB::ExpressionAction::execute(DB::Block&, bool, std::__1::shared_ptr<DB::ExtraBlock>&) const @ 0xd0eea94 in /usr/bin/clickhouse
7. DB::ExpressionActions::execute(DB::Block&, bool) const @ 0xd0f29d0 in /usr/bin/clickhouse
8. DB::FilterBlockInputStream::FilterBlockInputStream(std::__1::shared_ptr<DB::IBlockInputStream> const&, std::__1::shared_ptr<DB::ExpressionActions>, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, bool) @ 0xd28d4e0 in /us
r/bin/clickhouse
9. ? @ 0xd1610a3 in /usr/bin/clickhouse
10. void DB::InterpreterSelectQuery::executeImpl<DB::InterpreterSelectQuery::Pipeline>(DB::InterpreterSelectQuery::Pipeline&, std::__1::shared_ptr<DB::IBlockInputStream> const&, std::__1::optional<DB::Pipe>, DB::QueryPipeline&) @ 0xd18e250 in /usr/bin/clickhouse
11. DB::InterpreterSelectQuery::executeWithMultipleStreams(DB::QueryPipeline&) @ 0xd14e743 in /usr/bin/clickhouse
12. DB::InterpreterSelectWithUnionQuery::executeWithMultipleStreams(DB::QueryPipeline&) @ 0xd34f3c0 in /usr/bin/clickhouse
13. DB::InterpreterSelectWithUnionQuery::execute() @ 0xd34f6aa in /usr/bin/clickhouse
14. ? @ 0xd561f98 in /usr/bin/clickhouse
15. DB::executeQuery(DB::ReadBuffer&, DB::WriteBuffer&, bool, DB::Context&, std::__1::function<void (std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1:
:allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)>) @ 0xd564f19 in /usr/bin/clickhouse
16. DB::HTTPHandler::processQuery(Poco::Net::HTTPServerRequest&, HTMLForm&, Poco::Net::HTTPServerResponse&, DB::HTTPHandler::Output&) @ 0x8feb706 in /usr/bin/clickhouse
17. DB::HTTPHandler::handleRequest(Poco::Net::HTTPServerRequest&, Poco::Net::HTTPServerResponse&) @ 0x8feebc3 in /usr/bin/clickhouse
18. Poco::Net::HTTPServerConnection::run() @ 0xe3888b4 in /usr/bin/clickhouse
19. Poco::Net::TCPServerConnection::start() @ 0xe3b885b in /usr/bin/clickhouse
20. Poco::Net::TCPServerDispatcher::run() @ 0xe3b8cdd in /usr/bin/clickhouse
21. Poco::PooledThread::run() @ 0x105cf3c7 in /usr/bin/clickhouse
22. Poco::ThreadImpl::runnableEntry(void*) @ 0x105cb1cc in /usr/bin/clickhouse
23. ? @ 0x105ccb6d in /usr/bin/clickhouse
24. start_thread @ 0x74a4 in /lib/x86_64-linux-gnu/libpthread-2.24.so
25. clone @ 0xe8d0f in /lib/x86_64-linux-gnu/libc-2.24.so
 (version 20.3.7.46 (official build))