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sar -n DEV 1

MySQL 查看表的大小

http://www.muzhuangnet.com/show/44458.html

1.查看所有数据库容量大小

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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 group by table_schema order by sum(data_length) desc, sum(index_length) desc;

2.查看指定数据库各表容量大小

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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='mysql' order by data_length desc, index_length desc;

3.查看所有数据库各表容量大小

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2

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 order by data_length desc, index_length desc;

4.查看指定数据库容量大小

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2

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='mysql';