CREATE TABLE test_in_skip_idx ( a UInt64, s String, INDEX idx s TYPE bloom_filter GRANULARITY 1 ) ENGINE = MergeTree() ORDER BY a INSERT INTO test_in_skip_idx SELECT number, number FROM numbers(10000000) OPTIMIZE TABLE test_in_skip_idx FINAL SELECT count() FROM test_in_skip_idx WHERE s IN (SELECT toString(number + 10000000) FROM numbers(100000)) SETTINGS use_skip_indexes = 0 DROP TABLE IF EXISTS test_in_skip_idx