存储过程之六—存储过程增删改查

-- ----------------------------
-- Table structure for person
-- ----------------------------
DROP TABLE IF EXISTS `person`;
CREATE TABLE `person` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `username` varchar(255) DEFAULT NULL,
  `age` int(11) DEFAULT NULL,
  `password` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=11 DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of person
-- ----------------------------
INSERT INTO `person` VALUES (‘1‘, ‘lisi‘, ‘21‘, ‘li123456‘);
INSERT INTO `person` VALUES (‘2‘, ‘zhangsan‘, ‘23‘, ‘zhang123456‘);

DROP PROCEDURE IF EXISTS proc_person_insert;
CREATE PROCEDURE proc_person_insert(
    IN uusername VARCHAR(255),
    IN uage INT(11),
    IN upassword VARCHAR(255),
    OUT flag INT(11)
)
BEGIN
    START TRANSACTION;
        INSERT INTO person (username, age, password) values (uusername, uage, upassword);
        SET flag = ROW_COUNT(); -- 保存sql语句操作后影响的行数
    COMMIT;    
END;
 
CALL proc_person_insert(‘lisi12‘, 22, ‘123456‘, @flag);
SELECT @flag;

DROP PROCEDURE IF EXISTS proc_person_update;
CREATE PROCEDURE proc_person_update(
    IN uid INT(11),
    IN uusername VARCHAR(255),
    IN uage INT(11),
    IN upassword VARCHAR(255),
    OUT flag INT(11)
)
BEGIN
    START TRANSACTION;
        UPDATE person SET username = uusername, age = uage, password = upassword WHERE id = uid;
        SET flag = ROW_COUNT(); -- 保存sql语句操作后影响的行数
    COMMIT;
END;

CALL proc_person_update(1, ‘zhaoliu‘, 20, ‘zhao123‘, @flag);
SELECT @flag;

DROP PROCEDURE IF EXISTS proc_person_findOne;
CREATE PROCEDURE proc_person_findOne(
    IN uid INT(11)
)
BEGIN
    SELECT username, age, password FROM person WHERE id = uid;
END;

CALL proc_person_findOne(1);

DROP PROCEDURE IF EXISTS proc_person_findAll;
CREATE PROCEDURE proc_person_findAll()
BEGIN
    SELECT id, username, age, password FROM person;
END;

CALL proc_person_findAll();

DROP PROCEDURE IF EXISTS proc_person_del;
CREATE PROCEDURE proc_person_del(
    IN uid  INT(11),
    OUT flag INT(11)
)
BEGIN
    START TRANSACTION;
        DELETE FROM person where id = uid;
        SET flag = ROW_COUNT();
    COMMIT;
END;

CALL proc_person_del(3, @flag);
SELECT @flag;