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MySQLStoredProgramsSummary

Part 1. 分类

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Stored Programs

  - Stored Routines

     - Procedure

     - Function


  - Event Scheduler  


  - Trigger

Part 2. 概要

MySQL Stored Programs Summary

MySQL Stored Programs Summary

MySQL Stored Programs Summary

MySQL Stored Programs Summary

另, 对于Event Scheduler和Trigger还各有一小点, 要了解到.


Event Scheduler在MHA环境下, 手动在线切换时, 会有如下信息提示, 要暂将Event Scheduler关闭.

Wed Sep 13 10:55:43 2017 - [error][/usr/local/share/perl5/MHA/MasterRotate.pm, ln161] We should not start online master switch when one of connections are running long updates on the current master(192.168.19.168(192.168.19.168:3306)). Currently 1 update thread(s) are running.

Details:

{'Time' => '147223','Command' => 'Daemon','db' => undef,'Id' => '117223','Info' => undef,'User' => 'event_scheduler','State' => 'Waiting on empty queue','Host' => 'localhost'}

Wed Sep 13 10:55:43 2017 - [error][/usr/local/share/perl5/MHA/ManagerUtil.pm, ln177] Got ERROR:  at /usr/local/bin/masterha_master_switch line 53.


Trigger不能建立在MySQL数据库上, 会有如下报错.

ERROR 1465 (HY000): Triggers can not be created on system tables

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