如何查询mysql数据下所有数据库的占用空间大小？
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一、查询所有数据库每个数据库的空间大小
mysql> use information_schema;
mysql>SELECT table_schema,SUM(AVG_ROW_LENGTH*TABLE_ROWS+INDEX_LENGTH)/1024/1024 AS total_mb FROM information_schema.TABLES group by table_schema;
二、查询所有数据库占用空间总大小
mysql> use information_schema;
mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES;
三、查看指定数据库的大小，比如说：数据库test，方法如下： mysql> use information_schema; mysql> select concat(round(sum(DATA_LENGTH/1024/1024),2),'MB') as data from TABLES where table_schema='test'; 1.查看所有数据库各容量大小 select table_schema as '数据库', sum(table_rows) as '记录数', sum(truncate(data_length/1024/1024, 2)) ...点击查看剩余70%
by thinkfuture
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