<test> <settings> <allow_experimental_map_type>1</allow_experimental_map_type> </settings> <substitutions> <substitution> <name>key_suffix</name> <values> <value>''</value> <value>'-miss'</value> </values> </substitution> </substitutions> <create_query> CREATE TABLE column_map_test ENGINE = MergeTree ORDER BY number AS SELECT number, map FROM ( SELECT number, arrayMap(x -> toString(x), range(100)) AS keys, arrayMap(x -> toString(x * x), range(100)) AS values, cast((keys, values), 'Map(String, String)') AS map FROM numbers_mt(10000) ) SETTINGS max_insert_threads = 8 </create_query> <fill_query>optimize table column_map_test final</fill_query> <query>SELECT count() FROM column_map_test WHERE NOT ignore(arrayMap(x -> map[CONCAT(toString(x), {key_suffix})], range(0, 100, 10)))</query> <drop_query>DROP TABLE IF EXISTS column_map_test</drop_query> </test>