Home Database Mysql Tutorial MySQL事件调度器_MySQL

MySQL事件调度器_MySQL

Jun 01, 2016 pm 01:18 PM

bitsCN.com

MySQL 5.1 中新增了事件调度器这一个功能。可以实现类似于SQL Server的Job功能。

1.语法

CREATE EVENT [IF NOT EXISTS] event_nameON SCHEDULE schedule [ON COMPLETION [NOT] PRESERVE][ENABLE | DISABLE][COMMENT 'comment']DO sql_statement;
Copy after login
View Code

其中schedule的语句可以表示为:

AT TIMESTAMP [+ INTERVAL]| EVERY INTERVAL [STARTS TIMESTAMP] [ENDS TIMESTAMP]
Copy after login
View Code

interval的单位可以有如下几种:

YEAR | QUARTER | MONTH | DAY | HOUR | MINUTE |WEEK | SECOND | YEAR_MONTH | DAY_HOUR | DAY_MINUTE | DAY_SECOND | HOUR_MINUTE | HOUR_SECOND | MINUTE_SECOND
Copy after login
View Code

2.开启、关闭事件调度器

在使用这个功能之前必须确保event_scheduler已开启.

/*开启*/SET GLOBAL event_scheduler = 1;-- 或SET GLOBAL event_scheduler = ON;/*关闭*/SET GLOBAL event_scheduler = 0;-- 或SET GLOBAL event_scheduler = OFF; 
Copy after login
View Code

3.示例

创建测试数据库:

CREATE TABLE tst_event (createtime DATETIME);
Copy after login
View Code

创建测试用存储过程:

/*创建测试用存储过程*/CREATE PROCEDURE msp_TestEvent()BEGIN    INSERT INTO tst_event VALUES (CURRENT_TIMESTAMP);END
Copy after login
View Code

创建事件调度器:

CREATE EVENT IF NOT EXISTS me_TestEvent    ON SCHEDULE EVERY 10 SECOND     STARTS '2014-02-28 16:45:00' ENDS DATE_ADD('2014-02-28 16:46:00',INTERVAL 1 SECOND)    DO CALL msp_TestEvent();
Copy after login
View Code

修改事件调度器:

/*修改EVENT*/ ALTER EVENT me_TestEvent    ON SCHEDULE EVERY 10 SECOND     STARTS '2014-02-27 16:45:00' ENDS DATE_ADD('2014-02-27 16:46:00',INTERVAL 1 SECOND)    DO INSERT INTO tst_event VALUES (CURRENT_TIMESTAMP);
Copy after login
View Code

查看事件调度器:

/*查看EVENT*/   show events;-- 或select * from information_schema.events 
Copy after login
View Code

4.不同时间间隔的调度: 

一天后执行调度器:

/*一天后执行调度器T*/    CREATE EVENT e_TestEventON SCHEDULE AT CURRENT_TIMESTAMP + INTERVAL 1 DAYDO CALL msp_TestEvent();
Copy after login
View Code

2014-02-28日执行调度器:

/*2014-02-28日执行调度器*/    CREATE EVENT e_TestEventON SCHEDULE AT TIMESTAMP '2014-02-28 00:00:00'DO CALL msp_TestEvent();
Copy after login
View Code

每天执行调度器:

/*每天执行调度器*/    CREATE EVENT e_TestEventON SCHEDULE EVERY 1 DAYDO CALL msp_TestEvent();
Copy after login
View Code

一天后每天执行调度器:

/*一天后每天执行调度器*/    CREATE EVENT e_TestEventON SCHEDULE EVERY 1 DAYSTARTS CURRENT_TIMESTAMP + INTERVAL 2 DAYDO CALL msp_TestEvent(); 
Copy after login
View Code

每天执行调度器,10天后停止:

/*每天执行调度器,10天后停止*/    CREATE EVENT e_TestEventON SCHEDULE EVERY 1 DAYENDS CURRENT_TIMESTAMP + INTERVAL 10 DAYDO CALL msp_TestEvent(); 
Copy after login
View Code

一天后开始,每天执行调度器,10天后停止:

/*一天后开始,每天执行调度器,10天后停止*/    CREATE EVENT e_TestEventON SCHEDULE EVERY 1 DAYSTARTS CURRENT_TIMESTAMP + INTERVAL 1 DAYENDS CURRENT_TIMESTAMP + INTERVAL 10 MONTHDO CALL msp_TestEvent();
Copy after login
View Code

每天执行调度器,只执行一次:

/*每天执行调度器,只执行一次*/    CREATE EVENT e_TestEventON SCHEDULE EVERY 1 DAYON COMPLETION NOT PRESERVEDO CALL msp_TestEvent(); 
Copy after login
View Code

5.删除调度器

DROP EVENT [IF EXISTS] event_name
Copy after login
View CodebitsCN.com
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
3 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Article Tags

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Reduce the use of MySQL memory in Docker Reduce the use of MySQL memory in Docker Mar 04, 2025 pm 03:52 PM

Reduce the use of MySQL memory in Docker

How do you alter a table in MySQL using the ALTER TABLE statement? How do you alter a table in MySQL using the ALTER TABLE statement? Mar 19, 2025 pm 03:51 PM

How do you alter a table in MySQL using the ALTER TABLE statement?

How to solve the problem of mysql cannot open shared library How to solve the problem of mysql cannot open shared library Mar 04, 2025 pm 04:01 PM

How to solve the problem of mysql cannot open shared library

Run MySQl in Linux (with/without podman container with phpmyadmin) Run MySQl in Linux (with/without podman container with phpmyadmin) Mar 04, 2025 pm 03:54 PM

Run MySQl in Linux (with/without podman container with phpmyadmin)

What is SQLite? Comprehensive overview What is SQLite? Comprehensive overview Mar 04, 2025 pm 03:55 PM

What is SQLite? Comprehensive overview

Running multiple MySQL versions on MacOS: A step-by-step guide Running multiple MySQL versions on MacOS: A step-by-step guide Mar 04, 2025 pm 03:49 PM

Running multiple MySQL versions on MacOS: A step-by-step guide

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)? Mar 21, 2025 pm 06:28 PM

What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?

How do I configure SSL/TLS encryption for MySQL connections? How do I configure SSL/TLS encryption for MySQL connections? Mar 18, 2025 pm 12:01 PM

How do I configure SSL/TLS encryption for MySQL connections?

See all articles