1.查询本地表时，执行查询语句，结果输出到文本

clickhouse-client -h XXXX --port XXXX -u xxxx --password xxxx  -m --query " 

select
    database,
    table,
    formatReadableSize(bytes_on_disk) as bytes_on_disk,
    formatReadableSize(data_uncompressed_bytes) as data_uncompressed_bytes,
    formatReadableSize(data_compressed_bytes) as data_compressed_bytes,
    compress_rate,
    rows
from
(
    select
        database,
        table,
        sum(rows) as rows,
        min(min_date) as min_date,
        max(max_date) as max_date,
        sum(bytes_on_disk) as bytes_on_disk,
        sum(data_uncompressed_bytes) as data_uncompressed_bytes,
        sum(data_compressed_bytes) as data_compressed_bytes,
        (data_compressed_bytes / data_uncompressed_bytes) * 100 as compress_rate
    from system.parts
    where active 
     and database = 'xxxx'
     and table = '本地表'
     and partition = XXXX
    group by
        database,
        table" > result.txt 

注意：此sql查询为本地表，如果需要查询整个表的未压缩大小，已压缩大小，占有磁盘大小，总条数，需要求出所有分布式表的结果并累计。

下文将加载求出所有分布式表的方法

1.将所有服务器对应的ip 放到一个TXT文本中，然后执行

 for ip in $(cat ip.txt); do

clickhouse-client -h XXXX --port XXXX -u xxxx --password xxxx  -m --query " 

select
    database,
    table,
    formatReadableSize(bytes_on_disk) as bytes_on_disk,
    formatReadableSize(data_uncompressed_bytes) as data_uncompressed_bytes,
    formatReadableSize(data_compressed_bytes) as data_compressed_bytes,
    compress_rate,
    rows
from
(
    select
        database,
        table,
        sum(rows) as rows,
        min(min_date) as min_date,
        max(max_date) as max_date,
        sum(bytes_on_disk) as bytes_on_disk,
        sum(data_uncompressed_bytes) as data_uncompressed_bytes,
        sum(data_compressed_bytes) as data_compressed_bytes,
        (data_compressed_bytes / data_uncompressed_bytes) * 100 as compress_rate
    from system.parts
    where active 
     and database = 'xxxx'
     and table = '本地表'
     and partition = XXXX
    group by
        database,
        table" >> result.txt 
done 

2.使用awk切割文本，并汇总结果

未压缩大小 cat result.txt|awk '{sum+=$5} END {print "Sum未压缩大小 = ", sum}'
 已压缩大小 cat result.txt|awk '{sum+=$7} END {print "Sum 已压缩大小 = ", sum}'
 磁盘大小  cat result.txt|awk '{sum+=$3} END {print "Sum 磁盘大小 = ", sum}'
 总条数  cat result.txt|awk '{sum+=$10} END {print "Sum 总条数 = ", sum}'