Method getDataAt is not supported for Nullable(UInt8) in case if value is NULL: While processing cityHash64 #51541
Description
Use case: calculating the row checksum (when some rows have nulls) https://fiddle.clickhouse.com/298c92ff-7ea5-48e8-8f3d-862501d22c05
tiny repro:
select cityHash64(tuple(Null::Nullable(UInt8)))
See PR: #40195
It used to work before version 22.9, and it was also backported to older versions. For example: 22.8.5 - works, 22.8.6 - fails with exception