ok DROP PROCEDURE IF EXISTS truncate_insert_rank_month; DELIMITER /w/ CREATE PROCEDURE truncate_insert_rank_month () BEGIN ; TRUNCATE rank_month ; DO INSERT INTO rank_month ( fk_country, fk_categoryid, topx, history_year, history_month, coin_sum, amo…

http://flylib.com/books/en/1.142.1.125/1/ Using Stored Programs with MySQLdb The techniques for calling stored programs with MySQLdb differ only slightly from those for using traditional SQL statements. That is, we create a cursor, execute the SQL to…

MySQL Name mysql - the MySQL command-line tool Synopsis mysql [options] db_name Description mysql is a simple SQL shell with input line editing capabilities. It supports interactive and noninteractive use. When used interactively, query results are p…

https://code.tutsplus.com/articles/an-introduction-to-stored-procedures-in-mysql-5--net-17843 MySQL 5 introduced a plethora of new features - stored procedures being one of the most significant. In this tutorial, we will focus on what they are, and h…

Appendices Published: April 27, 2005 On This Page Appendix A: SQL Server for Oracle Professionals Appendix B: Getting the Best Out of SQL Server 2000 and Windows Appendix C: Baselining Appendix D: Installing Common Drivers and Applications Installing…

MySQL provides privileges that apply in different contexts and at different levels of operation: Administrative privileges enable users to manage operation of the MySQL server. These privileges are global because they are not specific to a particular…

MySQL5.5 中引入了 metadata lock. 顾名思义,metadata lock 不是为了保护表中的数据的,而是保护 database objects(元数据)的.包括表结构.schema.存储过程.函数.触发器.mysql的调度事件(events). 要理解 metadata lock 最重要的一点就是:将 metadata lock放到数据库事务的语义中来理解.metadata lock 的作用就是当一个事务在执行时,事务涉及到的所有元数据(metadata,也就是 datab…

首先我建议你在对MySQL表做DDL操作时: 1 执行 show processlist 查看,要操作的表(数据库对象)是否处于锁状态 if("未锁定") { 执行DDL语句 }else { 三思后行 } 作为一个程序猿,随着开发的进行,我们要面临需求的变更. 随之而来的有可能就是表结构的变化--字段的增加,字段数据类型的更新. 此时此刻,我就在Alter Table面前跪了. My Sql 中 Waiting for table metadata lock,主要发生在你在Alter…

http://www.mysqltutorial.org/mysql-signal-resignal/ Summary: in this tutorial, you will learn how to use SIGNAL  and RESIGNAL  statements to raise error conditions inside stored procedures. MySQL SIGNAL statement You use the SIGNAL  statement to retu…

6. 安全性 在Mysql安装配置时要考虑安全性的影响,以下几点: Ÿ   常规因素影响安全性 Ÿ   程序自身安全性 Ÿ   数据库内部的安全性,即,访问控制 Ÿ   网络安全性和系统安全性 Ÿ   数据文件的备份,日志文件和配置文件的安全性 6. 安全性 6.1 常规安全性问题 6.1.1安全性最佳实践 6.1.2 保持密码安全性 6.1.2.1终端用户密码安全性最佳实践 6.1.2.2 密码管理方法 6.1.2.3 密码和日志 6.1.2.4 Mysql中的密码hash 6.1.2.5 m…