DROP TABLE IF EXISTS defaults_all_columns; CREATE TABLE defaults_all_columns (n UInt8 DEFAULT 42, s String DEFAULT concat('test', CAST(n, 'String'))) ENGINE = Memory; INSERT INTO defaults_all_columns FORMAT JSONEachRow {"n": 1, "s": "hello"} {}; INSERT INTO defaults_all_columns FORMAT JSONEachRow {"n": 2}, {"s": "world"}; SELECT * FROM defaults_all_columns ORDER BY n, s; DROP TABLE defaults_all_columns;