Mysql：日志管理：综述

mysql支持多种系统日志，提供全面的系统错误、事件、业务逻辑的记录、追踪、诊断、查询等等功能！

Log Type	Information Written to Log
The error log	Problems encountered starting, running, or stopping mysqld
The general query log	Established client connections and statements received from clients
The binary log	All statements that change data (also used for replication)
The slow query log	All queries that took more than long_query_time seconds to execute or didn't use indexes