1.查看所有數據庫容量大小
SELECT
table_schema AS '數據庫',
sum( table_rows ) AS '記錄數',
sum( TRUNCATE ( data_length / 1024 / 1024, 2 ) ) AS '數據容量(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.查看所有數據庫各表容量大小
select
table_schema as '數據庫',
table_name as '表名',
table_rows as '記錄數',
truncate(data_length/1024/1024, 2) as '數據容量(MB)',
truncate(index_length/1024/1024, 2) as '索引容量(MB)'
from information_schema.tables
order by table_schema,data_length desc, index_length desc;
3.查看指定數據庫容量大小
例：查看mysql庫容量大小
SELECT
table_schema AS '數據庫',
sum( table_rows ) AS '記錄數',
sum( TRUNCATE ( data_length / 1024 / 1024, 2 ) ) AS '數據容量(MB)',
sum( TRUNCATE ( index_length / 1024 / 1024, 2 ) ) AS '索引容量(MB)'
FROM
information_schema.TABLES
WHERE
table_schema = 'mysql';
4.查看指定數據庫各表容量大小
例：查看mysql庫各表容量大小
SELECT
table_schema AS '數據庫',
table_name AS '表名',
table_rows AS '記錄數',
TRUNCATE ( data_length / 1024 / 1024, 2 ) AS '數據容量(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;
