Dynamic/Variant errors on insert (Code: 117. DB::Exception:)

[EugeneIstomin]

Describe the bug

Some internal structures are incorrect when insert in Dynamic/Variant.

Steps to reproduce

1. insert into datatypes like:

• "Map(String, Variant(String, UInt128, Bool))",
• "Map(String, Dynamic)",

Expected behaviour

Insert successfully done.

clickhouse-connect and/or ClickHouse server logs

Variant: Code: 117. DB::Exception: Invalid version for SerializationVariant discriminators column.: While executing Native. (INCORRECT_DATA) (version 25.1.1.1751)
Dynamic: Code: 117. DB::Exception: Invalid version for Dynamic structure serialization: 4: While executing Native. (INCORRECT_DATA) (version 25.1.1.1751)

Configuration

Environment

• clickhouse-connect version: 0.8.10
• Python version: 3.11/3.12
• Operating system: linux

ClickHouse server

• ClickHouse Server version: 24.11, 25.1.1 (from git repo)

[genzgd]

Thanks for the report -- it looks like you have the problem on both 24.11 and 25.1 -- I assume the behavior is the same on both?

[EugeneIstomin]

Yes, tested on both:

• 24.11.1.2557
• 25.1.1.1751