DB::Exception: Invalid type for SerializationLowCardinality index column #63859
Labels
bug
Confirmed user-visible misbehaviour in official release
comp-lowcardinality
LowCardinality data type
major
Describe what's wrong
Locally querying a Map(LowCardinality(String), String) inside a Tuple throws a
DB::Exception: Invalid type for SerializationLowCardinality index column
exception. (INCORRECT_DATA
)Does it reproduce on the most recent release?
Reproducible in
24.5.1.1099
,24.4.1.2088
,23.8.14.6
24.5.1.1099
: https://fiddle.clickhouse.com/0634d11d-c185-42db-b0eb-47558dcf14ce24.4.1.2088
: https://fiddle.clickhouse.com/d503ebe3-cccf-46d2-8ff1-4626e941cb9523.8.14.6
: https://fiddle.clickhouse.com/4cb34d41-9e09-4c82-b13d-643bd6134481How to reproduce
clickhouse client --stacktrace --queries-file poc.sql
Both changing
event_data
toMap(String, String)
and movingevent_data
out of thewinlog Tuple
prevent the error from happening. The ingested URL contains 200K rows of random data and is publicly accessible.Expected behavior
No exception should occur.
Error message and/or stacktrace
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