SELECT
    date,
    v
FROM t_02147
ORDER BY
    toStartOfHour(date) ASC,
    v ASC
SELECT
    date,
    v
FROM t_02147_dist
ORDER BY
    toStartOfHour(date) ASC,
    v ASC
SELECT
    date,
    v
FROM t_02147_merge
ORDER BY
    toStartOfHour(date) ASC,
    v ASC