clickhouse
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Nullable fields
Recently Yandex added support for Nullable types. But this gem does not support them.
Nullable fields are not documented yet. Some info can be found here
I forked gem and fixed this issue: https://github.com/workgena/clickhouse/pull/1/files https://github.com/workgena/clickhouse/pull/2/files
I'll try to write some test on this and create PR later.