mysql命令总结

统计全库数据量：

use information_schema; 

SELECT
TABLE_NAME,
(DATA_LENGTH/1024/1024) as DataM ,
(INDEX_LENGTH/1024/1024) as IndexM,
((DATA_LENGTH+INDEX_LENGTH)/1024/1024) as AllM,
TABLE_ROWS
FROM
TABLES
WHERE
TABLE_SCHEMA = 'database_name';