ClickHouse/dbms/tests/queries/0_stateless/00931_low_cardinality_set_index_in_key_condition.sql

drop table if exists test_in;
create table test_in (a LowCardinality(String)) Engine = MergeTree order by a;

insert into test_in values ('a');
select * from test_in where a in ('a');

drop table if exists test_in;