DELIMITER // CREATE PROCEDURE AddNumbers(IN a INT, IN b INT, OUT sum INT) BEGIN DECLARE temp INT; SET temp = a + b; SET sum = temp; END // DELIMITER ; 调用该存储过程: 代码语言:txt 复制 CALL AddNumbers(3, 4, @result); SELECT @result; -- 输出 7 可能遇到的问题及解决方法 问题...
复制代码 存储过程或函数的参数:在使用CREATE PROCEDURE或CREATE FUNCTION创建存储过程或函数时,需要使用DECLARE来声明输入参数和输出参数(如果有)。例如: CREATE OR REPLACE PROCEDURE my_procedure ( p_input IN NUMBER, p_output OUT NUMBER ) AS BEGIN -- procedure body END; 复制代码 请注意,具体的语法和可用...
sql里declare_oracle declare语法 大家好,又见面了,我是你们的朋友全栈君。 一.关键字DECLARE DECLARE: 申明变量。可以申明时直接可以赋值,使用set和select对变量进行赋值。申明的变量用于sql中的传参或是中间的存储使用(作用等同于JAVA程序中的变量)。注意:声明时需要指定变量的类型。 (1)申明时直接赋值: DECLARE ...
| +---+ 1 row in set (0.05 sec) drop function if exists fun1; delimiter // create function fun1(a double,b double) returns double begin declare c double; set c = a +b; return c; end // delimiter ; select fun1(2.3,5.1); mysql59>select fun1(2.3,5.1); +---+ | fun1(2....
MySQL版本:5.7问题: [Err] 1064 - You have an error in your SQL syntax; check the manual that corresponds to yourMySQLserver version for the right syntax to use near 'DECLAREuserName VARCHAR(20)解决: 需将DEC mysql 存储过程异常 mysql
-- 方法一:使用 sqlstate_value declare primary_key_duplicate condition for sqlstate '23000'; -- 方法二: 使用mysql_error_code declare primary_key_duplicate condition for 1062; 定义处理程序 前面定义的处理条件,可以在定义处理程序中 使用,先了解一下定义语法: ...
-- At Module scope define ColourElementName and set it external -- so that its default value of 'black' can be overridden as a UDP DECLARE ColourElementName EXTERNAL NAME 'black'; -- Use the ColourElementName in a function CREATE FIRSTCHILD OF OutputRoot.XMLNSC.TestCase.ColourElementName ...
DECLARE <variable_name> [ , … ] <data-type> [{ = | DEFAULT} initial-value] initial-value - (back to Syntax) special-value | <string> | [ - ] <number> | ( <constant-expression> ) | <built-in-function> ( <constant-expression> ) | NULL special-value - (back to initial-value...
Transact-SQL reference for using DECLARE to define local variables for use in a batch or procedure.
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