mysql 查看表空间

SELECT 
    *
FROM
    (SELECT 
        table_name,
            CONCAT(ROUND(SUM(data_length / 1024 / 1024), 2), 'MB') AS data_length_MB,
            ROUND(SUM(data_length / 1024 / 1024), 2) data_length,
            CONCAT(ROUND(SUM(index_length / 1024 / 1024), 2), 'MB') AS index_length_MB
    FROM
        information_schema.tables
    WHERE
        table_schema = 'mss'
    GROUP BY table_name) t
ORDER BY data_length DESC