ClickHouse中各表空间占用统计

2022-03-12 | 0 评论 | 0 浏览

select
   table,
　　sum(rows) as row,
　　formatReadableSize(sum(bytes_on_disk)) as bytes_on_disk,
　　formatReadableSize(sum(data_uncompressed_bytes)) as ysq,
　　formatReadableSize(sum(data_compressed_bytes)) as ysh,
　　round(sum(data_compressed_bytes) / sum(data_uncompressed_bytes) * 100, 0) ys_rate
from system.parts
group by table
order by sum(data_compressed_bytes) desc;

select
　　sum(rows) as row,
　　formatReadableSize(sum(bytes_on_disk)) as bytes_on_disk,
　　formatReadableSize(sum(data_uncompressed_bytes)) as ysq,
　　formatReadableSize(sum(data_compressed_bytes)) as ysh,
　　round(sum(data_compressed_bytes) / sum(data_uncompressed_bytes) * 100, 0) ys_rate
from system.parts