mysql > DELIMITER // mysql > CREATE PROCEDURE proc3 (in parameter int) -> begin -> declare var int; -> set var=parameter+1; -> case var -> when 0 then -> insert into t values(17); -> when 1 then -> insert into t values(18); -> else -> insert into t values(19); ->...
1. 解决“mysql 创建函数出现invalid stored procedure” 的问题 通过按照上述步骤检查并纠正可能存在的问题,可以解决 “mysql 创建函数出现invalid stored procedure” 的问题。 如果您仍然遇到问题,可以查阅 MySQL 官方文档,或在相关的开发者社区中咨询其他开发者的意见。
CREATEPROCEDUREp1()SET@last_procedure='p1';CREATEPROCEDUREp2()SELECTCONCAT('Last procedure was ',@last_procedure);CALLp1();CALLp2();+---+|CONCAT('Last procedure was ',@last_procedure|+---+|Lastprocedurewasp1|+---+ 1、用户变量名一般以@开头 2、滥用用户变量会导致程序难以理解及管理 MySQL...
摘要:存储过程简介 SQL语句需要先编译然后执行,而存储过程(Stored Procedure)是一组为了完成特定功能的SQL语句集,经编译后存储在数据库中,用户通过指定存储过程的名字并给定参数(如果该存储过程带有参数)来调用执行它。 存储过程是可编程的函数,在数据库中创建并保存,可以由SQL语句和控制结阅读全文 posted @2018-12-2...
DROP {PROCEDURE | FUNCTION} [IF EXISTS] sp_name 不能在一个存储过程中删除另一个存储过程,只能调用另一个存储过程 显示存储过程: SHOW CREATE {PROCEDURE} sp_name 似于SHOW CREATE TABLE,它返回一个可用来重新创建已命名子程序的确切字符串。 显示存储过程特征: ...
So when developing application you should balance between them to choose whether to use stored procedure or not. The following tutorial we will guide you how to leverage stored procedure in your database programming task with a couple of practical examples. Getting Started with MySQL Stored ...
To update the logic stored in an object, you must delete it and create it again with the same object name.Create a SQL Stored Procedure A stored procedure object can have multiple parameters and use any parameter mode in combination. The following are parameter modes supported by SQL stored ...
When multiple client applications are written in different languages or work on different platforms, but need to perform the same database operations. When security is paramount. Banks, for example, use stored procedures and functions for all common operations. This provides a consistent and secure...
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...
1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'out has24h, out xStartTime, out xEndTime); sp 'prc_emp_has_24h' code likes ```