Example of column sizes in graphite table.

graphite_sizes.txt

:) SELECT name, formatReadableSize(sum(bytes)) FROM system.columns WHERE table = 'graphite_impl' AND database = 'default' GROUP BY name ORDER BY sum(bytes) DESC

SELECT 
    name, 
    formatReadableSize(sum(bytes))
FROM system.columns
WHERE (table = 'graphite_impl') AND (database = 'default')
GROUP BY name
ORDER BY sum(bytes) DESC

┌─name──────┬─formatReadableSize(sum(bytes))─┐
│ Time      │ 6.47 TiB                       │
│ Timestamp │ 5.97 TiB                       │
│ Value     │ 3.04 TiB                       │
│ Path      │ 1.12 TiB                       │
│ Date      │ 38.98 GiB                      │
└───────────┴────────────────────────────────┘