0x00.小声逼逼
DBA和运维的同学都晓得Mysql的性能问题，每次去客户调研零碎现状都会看下数据状况，个别我会先查看下存储、索引和数据条数。
0x01.上面是Sql
SELECT ISS.SCHEMA_NAME AS 'SCHEMA_NAME',ITS.TABLE_NAME AS 'TABLE_NAME',(ITS.DATA_LENGTH / 1024 / 1024) AS 'DATA (MB)',(ITS.INDEX_LENGTH / 1024 / 1024) AS 'INDEX (MB)',((ITS.DATA_LENGTH + ITS.INDEX_LENGTH) / 1024 / 1024) AS 'DATA + INDEX (MB)',ITS.TABLE_ROWS AS 'TOTAL_ROW'FROM information_schema.`TABLES` ITSRIGHT JOINinformation_schema.SCHEMATA ISS ON ITS.TABLE_SCHEMA = ISS.SCHEMA_NAMEWHERE ISS.SCHEMA_NAME = ${DATABASE_NAME}ORDER BY 4 DESC, ISS.SCHEMA_NAME, ITS.TABLE_NAME;