Mysql 备查
-- 数据库表占用空间大小select
table_schema as '数据库',
sum(table_rows) as '记录数',
sum(truncate(data_length/1024/1024, 2)) as '数据容量(MB)',
sum(truncate(index_length/1024/1024, 2)) as '索引容量(MB)'
from information_schema.tables
where table_schema='db_name';
-- 清空表(无日志)
truncate table tablename;
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