number_formatting_formats loop CREATE TABLE IF NOT EXISTS table_{format} (x UInt64) ENGINE = File(`{format}`) 5 10000 100 60000 format TabSeparated CSV Values JSON JSONCompact JSONEachRow TSKV RowBinary Native XML Parquet ODBCDriver2 Null MySQLWire test.hits INSERT INTO table_{format} SELECT number FROM numbers(100000000) DROP TABLE IF EXISTS table_{format}