test_select_format loop 5 10000 100 60000 format TabSeparated TabSeparatedRaw TabSeparatedWithNames TabSeparatedWithNamesAndTypes CSV CSVWithNames Values Vertical JSON JSONCompact JSONEachRow TSKV Pretty PrettyCompact PrettyCompactMonoBlock PrettyNoEscapes PrettySpace XML test.hits SELECT * FROM test.hits LIMIT 1000000 FORMAT {format}