查看mysql数据表的大小

select
table_schema as \'数据库\',
table_name as \'表名\',
table_rows as \'记录数\',
truncate(data_length/1024/1024, 2) as \'数据容量(MB)\',
truncate(index_length/1024/1024, 2) as \'索引容量(MB)\'
from information_schema.tables
where table_schema=\'spider_2020\' and table_name = \'spider_72_ggzy_zrzyb_content\';

其中是spider_2020数据库，spider_72_ggzy_zrzyb_content是数据表名称

 

mysql压缩数据表命令

alter table spider_72_ggzy_zrzyb_content KEY_BLOCK_SIZE=8;

alter table spider_72_ggzy_zrzyb_content row_format=COMPRESSED;

其中 spider_72_ggzy_zrzyb_content 是数据表名称，压缩率在60%左右，10G文件，压缩后还剩6G