我们可以使用REPEAT循环语句重写test_mysql_while_loop存储过程,使用WHILE循环语句: DELIMITER $$ DROP PROCEDURE IF EXISTS mysql_test_repeat_loop$$ CREATE PROCEDURE mysql_test_repeat_loop() BEGIN DECLARE x INT; DECLARE str VARCHAR(25
Summary:in this tutorial, you will learn how to use various loop statements in MySQL includingWHILE,REPEATandLOOPto run a block of code repeatedly based on a condition. MySQL provides loop statements that allow you to execute a block of SQL code repeatedly based on a condition. There are thr...
废话不多说,我们先来调用test_mysql_while_loopstored存储过程: CALLtest_mysql_while_loop(); AI代码助手复制代码 执行上面查询语句,得到以下结果: mysql>CALLtest_mysql_while_loop();+---+|str|+---+|1,2,3,4,5,|+---+1rowinsetQuery OK,0rowsaffected AI代码助手复制代码 完事再来看REPEAT循环语句...
I have a table autos, that has a column name, I want to check first 5 rows in the table and if name value is "toyota", in table mytable write "yes", else write "no". I write stored procedure, but mysqli_error() returns error in line, where I have EXECUTE ... If in WHEN...
Summary: in this tutorial, you will learn how to use various loop statements in MySQL including WHILE, REPEAT and LOOP to run a block of code repeatedly based on a condition. MySQL provides loop statements that allow you to execute a block of SQL code repeatedly based on a condition. ...
mysql 不用存储过程 while循环sql 不建议用sql存储过程 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出参数(如果该存储过程带有参数)来执行它。 存储过程是SQL 语句和可选控制流语句的预编译集合,以一个名称存储并作为一个单元处理。存储...
三种循环结构为: loop……end loop while……do……end while repeat……until…end repeat Libertyyyyy 2022/11/01 2.6K0 【MySQL-18】存储过程各种需求实现合集-[进阶语法]-<if,参数(IN,OUT,INOUT),case,while,repeat,loop,游标cursor,条件处理程序handler> repeat存储过程语法handlermysql YY的秘密代码小屋 202...
MySQL存储过程创建与使用 存储过程是数据库中完成特定功能的SQL集,一次编译后永久有效,有点类似于Java里面的方法或C语言中的函数,我们可以在方法体中完成特定的功能,后续只要调用即可。 2.为什么要使用存储过程?...3.1.创建无参数存储过程的语法及使用 无参数传递的存储过程语法如下 CREATE PROCEDURE 存储过程的名字(...
废话不多说，我们先来调⽤test_mysql_while_loopstored存储过程：CALL test_mysql_while_loop();执⾏上⾯查询语句，得到以下结果：mysql> CALL test_mysql_while_loop();+---+ | str | +---+ | 1,2,3,4,5, | +---+ 1 row in set Query OK, 0 rows affected 完事再来看REPEAT循环语句...
MySQL option file: [mysqld] innodb_directories="directory_path_1;directory_path_2" The following procedure is applicable to moving individual file-per-table and general tablespace files, system tablespace files, undo tablespace files, or the data directory. Before moving files or directories, revi...