注意:在某些 MySQL 配置中,你可能需要在my.cnf或my.ini配置文件中设置event_scheduler=ON来确保事件调度器在 MySQL 服务器启动时自动开启。 2. 创建存储过程 假设你已经有一个存储过程,我们在这里创建一个简单的示例存储过程: DELIMITER // CREATE PROCEDURE MyStoredProcedure() BEGIN -- 这里是你的 SQL 逻辑 I...
MySQL [test]> create procedure ll() -> begin -> declare done int default false; -> declare i int default 0; -> declare cur cursor for select distinct id from test; -> declare continue handler for not found set done = true;
In the following section, you learn how to create and delete stored procedures in your MySQL database.Note: You can not update the body of a stored procedure object after creation. To update the logic stored in an object, you must delete it and create it again with the same object name...
Java etc to retrive data. Is this true ? After creating a stored procedure, where do I keep it in order to be called by an application ? Do I need to provide path for this procedure to be called ? If yes, where ? Thanks
MySQL存储过程可使用两种风格的注释 双模杠:-- 该风格一般用于单行注释 c风格: 一般用于多行注释 例如: mysql > DELIMITER // mysql > CREATE PROCEDURE proc1 --name存储过程名 -> (IN parameter1 INTEGER) -> BEGIN -> DECLARE variable1 CHAR(10); -> IF parameter1 = 17 THEN -> SET variable1 =...
MySQL存储过程(Stored Procedure)主要的知识点: 分隔符(delimiter) 变量(variable) 参数(parameters) 分隔符(DELIMITER) MySQL通过delimiter来区分不同的SQL语句(SQL Statement),默认的分隔符是;; 对于procedure,会有多条SQL Statement,且MySQL的每个statement都需要以分隔符结束; ...
COMMENT子句是一个MySQL的扩展,它可以被用来描述存储程序。这个信息被SHOW CREATE PROCEDURE和SHOW CREATE FUNCTION语句来显示。存储子程序不能使用LOAD DATA INFILE。 特征子句也有默认值,如果省略了就相当于:LANGUAGE SQL NOT DETERMINISTIC SQL SECURITY DEFINER COMMENT '' ...
Stored procedures are portable. When you write your stored procedure in SQL, you know that it will run on every platform that MySQL runs on, without obliging you to install an additional runtime-environment package, or set permissions for program execution in the operating system, or deploy dif...
servers. In this example scenario,server1contains databasedb1, andserver2contains databasedb2. The goal is to copy databasedb2toserver1, and the result onserver1should be the union of the two databases. The procedure used is to back upserver2usingmysqldump, then to restore this backup on...
MySQL stored procedure MySQL 5.0 later began to support stored procedures, stored procedures, consistency, efficiency, security and architecture characteristics, this section will explain the adoption of specific examples of how to manipulate MySQL stored PHP process. 261 examples: the creation of ...