查mysql剩余磁盘空间命令_MySQL查看库所占磁盘空间大小的命令、查看表所占磁盘空间大小的命令...

查看库所占磁盘空间大小的命令：

SELECT CONCAT(TRUNCATE(SUM(data_length)/1024/1024,2),’MB’) AS data_size,

CONCAT(TRUNCATE(SUM(max_data_length)/1024/1024,2),’MB’) AS max_data_size,

CONCAT(TRUNCATE(SUM(data_free)/1024/1024,2),’MB’) AS data_free,

CONCAT(TRUNCATE(SUM(index_length)/1024/1024,2),’MB’) AS index_size

FROM information_schema.tables WHERE TABLE_SCHEMA = ‘数据库名’;

查看表所占磁盘空间大小的命令

SELECT CONCAT(TRUNCATE(SUM(data_length)/1024/1024,2),’MB’) AS data_size,

CONCAT(TRUNCATE(SUM(max_data_length)/1024/1024,2),’MB’) AS max_data_size,

CONCAT(TRUNCATE(SUM(data_free)/1024/1024,2),’MB’) AS data_free,

CONCAT(TRUNCATE(SUM(index_length)/1024/1024,2),’MB’) AS index_size

FROM information_schema.tables WHERE TABLE_NAME = ‘表名’;