统计和运维

查询估算的表和每行的磁盘占用

SELECT
    table_name,
    table_rows,
    data_length,
    avg_row_length
FROM
    information_schema.tables
WHERE
    table_schema = 'your_database_name'
    AND table_name = 'your_table_name';

查看当前连接

show processlist;