navicat查看MySQL数据库、表容量大小

 1. 查看所有数据库容量大小

    select
    table_schema as \'数据库\',
    sum(table_rows) as \'记录数\',
    sum(truncate(data_length/1024/1024, 2)) 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. 查看所有数据库各表容量大小

1. select
2. table_schema as \'数据库\',
3. table_name as \'表名\',
4. table_rows as \'记录数\',
5. truncate(data_length/1024/1024, 2) as \'数据容量(MB)\',
6. truncate(index_length/1024/1024, 2) as \'索引容量(MB)\'
7. from information_schema.tables
8. order by data_length desc, index_length desc;

3. 查看指定数据库容量大小

例：查看mysql库容量大小

1. select
2. table_schema as \'数据库\',
3. sum(table_rows) as \'记录数\',
4. sum(truncate(data_length/1024/1024, 2)) as \'数据容量(MB)\',
5. sum(truncate(index_length/1024/1024, 2)) as \'索引容量(MB)\'
6. from information_schema.tables
7. where table_schema=\'mysql\';

4. 查看指定数据库各表容量大小

例：查看mysql库各表容量大小

1. select
2. table_schema as \'数据库\',
3. table_name as \'表名\',
4. table_rows as \'记录数\',
5. truncate(data_length/1024/1024, 2) as \'数据容量(MB)\',
6. truncate(index_length/1024/1024, 2) as \'索引容量(MB)\'
7. from information_schema.tables
8. where table_schema=\'mysql\'
9. order by data_length desc, index_length desc;