mysql怎么存数组

CREATE DATABASE huafeng_db;

use huafeng_db;

DROP TABLE IF EXISTS `huafeng_db`.`t_scores`;

DROP TABLE IF EXISTS `huafeng_db`.`t_students`;

DROP TABLE IF EXISTS `huafeng_db`.`t_class`;

CREATE TABLE `huafeng_db`.`t_class` (  `class_id` int(11) NOT NULL,  `class_name` varchar(32) CHARACTER SET utf8 DEFAULT NULL,

  PRIMARY KEY (`class_id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

INSERT INTO `huafeng_db`.`t_class` (`class_id`, `class_name`) VALUES ('1', '一年级');

INSERT INTO `huafeng_db`.`t_class` (`class_id`, `class_name`) VALUES ('2', '二年级');

INSERT INTO `huafeng_db`.`t_class` (`class_id`, `class_name`) VALUES ('3', '三年级');

INSERT INTO `huafeng_db`.`t_class` (`class_id`, `class_name`) VALUES ('4', '四年级');

INSERT INTO `huafeng_db`.`t_class` (`class_id`, `class_name`) VALUES ('5', '五年级');

INSERT INTO `huafeng_db`.`t_class` (`class_id`, `class_name`) VALUES ('6', '六年级');

CREATE TABLE `t_students` (  `student_id` int(11) NOT NULL AUTO_INCREMENT,  `student_name` varchar(32) NOT NULL,  `sex` int(1) DEFAULT NULL,  `seq_no` int(11) DEFAULT NULL,  `class_id` int(11) NOT NULL,

  PRIMARY KEY (`student_id`),

  KEY `class_id` (`class_id`),

  CONSTRAINT `t_students_ibfk_1` FOREIGN KEY (`class_id`) REFERENCES `t_class` (`class_id`)

) ENGINE=InnoDB DEFAULT CHARSET=utf8;

INSERT INTO `huafeng_db`.`t_students`(`student_name`,`sex`,`seq_no`,`class_id`) VALUES('小红',0,1,'1');

INSERT INTO `huafeng_db`.`t_students`(`student_name`,`sex`,`seq_no`,`class_id`) VALUES('小青',0,2,'2');

INSERT INTO `huafeng_db`.`t_students`(`student_name`,`sex`,`seq_no`,`class_id`) VALUES('小明',1,3,'3');

INSERT INTO `huafeng_db`.`t_students`(`student_name`,`sex`,`seq_no`,`class_id`) VALUES('小兰',0,4,'4');

INSERT INTO `huafeng_db`.`t_students`(`student_name`,`sex`,`seq_no`,`class_id`) VALUES('小米',1,5,'5');

INSERT INTO `huafeng_db`.`t_students`(`student_name`,`sex`,`seq_no`,`class_id`) VALUES('小白',1,6,'6');

CREATE TABLE `huafeng_db`.`t_scores` (  `score_id` int(11) NOT NULL AUTO_INCREMENT,  `course_name` varchar(64) DEFAULT NULL,  `score` double(3,2) DEFAULT NULL,  `student_id` int(11) DEFAULT NULL,

  PRIMARY KEY (`score_id`),

  KEY `student_id` (`student_id`),

  CONSTRAINT `t_scores_ibfk_1` FOREIGN KEY (`student_id`) REFERENCES `t_students` (`student_id`)

) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8;

INSERT INTO `t_scores` (`score_id`, `course_name`, `score`, `student_id`) VALUES ('1', '语文', '90', '1');

INSERT INTO `t_scores` (`score_id`, `course_name`, `score`, `student_id`) VALUES ('2', '数学', '97', '1');

INSERT INTO `t_scores` (`score_id`, `course_name`, `score`, `student_id`) VALUES ('3', '英语', '95', '1');

INSERT INTO `t_scores` (`score_id`, `course_name`, `score`, `student_id`) VALUES ('4', '语文', '92', '2');

INSERT INTO `t_scores` (`score_id`, `course_name`, `score`, `student_id`) VALUES ('5', '数学', '100', '2');

INSERT INTO `t_scores` (`score_id`, `course_name`, `score`, `student_id`) VALUES ('6', '英语', '98', '2');

DROP PROCEDURE IF EXISTS `p_del_studentInfo_bySeqNo`;

DELIMITER $$

CREATE PROCEDURE p_del_studentInfo_bySeqNo(IN arrayStr VARCHAR(1000),IN sSplit VARCHAR(10))

SQL SECURITY INVOKER  #允许其他用户运行BEGIN    DECLARE e_code INT DEFAULT 0;#初始化报错码为0

    DECLARE result VARCHAR(256) CHARACTER set utf8;#初始化返回结果，解决中文乱码问题

    DECLARE arrLength INT DEFAULT 0;/*定义数组长度*/

    DECLARE arrString VARCHAR(1000);/*定义初始数组字符*/

    DECLARE sStr VARCHAR(1000);/*定义初始字符*/

    DECLARE CONTINUE HANDLER FOR SQLEXCEPTION SET e_code=1;#遇到错误后继续执行;(需要返回执行结果时用这个)

    START TRANSACTION;#启动事务

    SET arrLength = LENGTH(arrayStr) - LENGTH(REPLACE(arrayStr,sSplit,''));/*获得数组长度*/

    SET arrString = arrayStr;

    DROP TEMPORARY TABLE IF EXISTS list_tmp;

    create temporary table list_tmp(id VARCHAR(32));/*定义临时表*/

    WHILE arrLength > 0 DO

      set sStr = substr(arrString,1,instr(arrString,sSplit)-1);            -- 得到分隔符前面的字符串 

      set arrString = substr(arrString,length(sStr)+length(sSplit)+1);     -- 得到分隔符后面的字符串 

      set arrLength = arrLength -1;

      set @str = trim(sStr);

      insert into list_tmp(id) values(@str);

     END WHILE;     IF row_count()=0 THEN 

        SET e_code = 1; 

        SET result = '请输入正确的参数'; 

      END IF;

    set @count = (SELECT count(1) FROM t_students s,list_tmp t WHERE s.seq_no = t.id);    IF @count >0 THEN

        DELETE FROM t_scores WHERE student_id in (SELECT s.student_id FROM t_students s,list_tmp t WHERE s.seq_no = t.id);

        DELETE FROM t_students WHERE student_id in (SELECT t.id FROM list_tmp t);    ELSE

         SET e_code = 1;

         SET result = '该学生不存在！';

    END IF;    IF e_code=1 THEN

        ROLLBACK;  #回滚

    ELSE

        COMMIT;

        SET result = '该学生已被删除成功';

    END IF;

    SELECT result;

    DROP TEMPORARY TABLE IF EXISTS list_tmp;

END $$

DELIMITER ;