Clickhouse table sizes

table-sizes.sql

SELECT table, formatReadableSize(size) as size, rows, days, formatReadableSize(avgDaySize) as avgDaySize FROM (
    SELECT
        table,
        sum(bytes) AS size,
        sum(rows) AS rows,
        min(min_date) AS min_date,
        max(max_date) AS max_date,
        (max_date - min_date) AS days,
        size / (max_date - min_date) AS avgDaySize
    FROM system.parts
    WHERE active
    GROUP BY table
    ORDER BY rows DESC
)

https://kb.altinity.com/altinity-kb-setup-and-maintenance/altinity-kb-system-tables-eat-my-disk/