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。
DELIMITER$$CREATEPROCEDURECheckGrade(INscoreINT,OUTgradeVARCHAR(3))BEGINCASEWHENscoreBETWEEN90AND100THENSETgrade:='A';WHENscoreBETWEEN80AND89THENSETgrade:='B';WHENscoreBETWEEN60AND79THENSETgrade:='C';WHENscoreBETWEEN0AND59THENSETgrade:='D';ELSESETgrade:='NO';ENDCASE;END$$DELIMITER; 4.4 WHILE ...
若在创建存储函数中报错“you might want to use the less safe log_bin_trust_function_creators variable”,有两种处理方法: 方式1:加上必要的函数特性“[NOT] DETERMINISTIC”和“{CONTAINS SQL | NO SQL | READS SQL DATA | MODIFIES SQL DATA}” 方式2: mysql>SETGLOBALlog_bin_trust_function_creators=...
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 ...
You can reference the stored statements using the object name as an alias in your application. When referenced, the statements are directly executed on the database engine, saving the amount of information transferred. Using these objects, you can offload some logic from your application to the ...
To alter the table | | Alter routine | Functions,Procedures | To alter or drop stored functions/procedures | | Create | Databases,Tables,Indexes | To create new databases and tables | | Create routine | Databases | To use CREATE FUNCTION/PROCEDURE | | Create temporary| Databases | To use...
含义:存储过程的英文是 Stored Procedure 。它的思想很简单,就是一组经过预先编译的SQL 语句的封装。 执行过程:存储过程预先存储在 MySQL 服务器上,需要执行的时候,客户端只需要向服务器端发出调用存储过程的命令,服务器端就可以把预先存储好的这一系列 SQL 语句全部执行。
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 ```