创建存储过程

查询语句

DDL

CREATE TABLE student (
    id INT PRIMARY KEY AUTO_INCREMENT,
    createDate DATE NOT NULL,
    phone VARCHAR(20) NOT NULL,
    age INT NOT NULL,
    sex ENUM('男', '女') NOT NULL,
    introduce TEXT NOT NULL,
    userName VARCHAR(50) NOT NULL
);

DML

INSERT INTO student (createDate, phone, age, sex, introduce, userName) 
VALUES ('2023-10-23', '13800138000', 20, '男', '青春如风，潇洒自如，才情出众，犹如明月照大江。', '张三');
INSERT INTO student (createDate, phone, age, sex, introduce, userName) 
VALUES ('2023-10-22', '13900139000', 22, '女', '才华横溢，智慧如海，温文尔雅，宛如春风拂面。', '李四');
INSERT INTO student (createDate, phone, age, sex, introduce, userName) 
VALUES ('2023-10-21', '13700137000', 21, '男', '风华正茂，英姿飒爽，志向远大，犹如苍鹰击长空。', '王五');
INSERT INTO student (createDate, phone, age, sex, introduce, userName) 
VALUES ('2023-10-20', '13600136000', 23, '女', '气质如兰，清新脱俗，才情横溢，好似瑶台降玉女。', '赵六');
INSERT INTO student (createDate, phone, age, sex, introduce, userName) 
VALUES ('2023-10-19', '13500135000', 24, '男', '风华绝代，英俊潇洒，才华横溢，犹如龙行天下，气势磅礴。', '孙七');
INSERT INTO student (createDate, phone, age, sex, introduce, userName) 
VALUES ('2023-10-18', '13400134000', 25, '男', '黄猿豪杰，风华绝代，金戈铁马，气吞万里如虎。智慧如海，深不可测，才情横溢，犹如璀璨星辰耀乾坤。', '黄猿');
INSERT INTO student (createDate, phone, age, sex, introduce, userName) 
VALUES ('2023-10-17', '13300133000', 22, '女', '才貌双全，温婉如玉，气质非凡，犹如仙女下凡尘。', '周八');

存储过程

编写一个存储过程`get_student_introduce`，该存储过程会查询并返回名为【黄猿】的学生的简介信息

DELIMITER //

CREATE PROCEDURE get_student_introduce()
BEGIN
    -- 声明变量来存储查询结果
    DECLARE student_introduce TEXT;

    -- 查询userName为'黄猿'的学生的introduce字段，并将结果赋值给变量
    SELECT introduce INTO student_introduce FROM student WHERE userName = '黄猿';

    -- 输出结果
    SELECT student_introduce AS '黄猿的简介';
END //

DELIMITER ;