银行管理系统

采用纯SQL语句实现银行管理系统的业务逻辑,基于MySQL5.6

先建立相关数据表

用户表:

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for t_user
-- ----------------------------
DROP TABLE IF EXISTS `t_user`;
CREATE TABLE `t_user` (
  `user_id` int(11) NOT NULL AUTO_INCREMENT,
  `user_name` varchar(32) COLLATE utf8_bin NOT NULL,
  `user_uuid` varchar(18) COLLATE utf8_bin NOT NULL,
  `user_tel` varchar(11) COLLATE utf8_bin NOT NULL,
  PRIMARY KEY (`user_id`)
) ENGINE=MyISAM AUTO_INCREMENT=2 DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

银行卡表:

t_bank.sql

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for t_bank
-- ----------------------------
DROP TABLE IF EXISTS `t_bank`;
CREATE TABLE `t_bank` (
  `bank_id` varchar(19) COLLATE utf8_bin NOT NULL,
  `bank_pass` varchar(255) COLLATE utf8_bin NOT NULL,
  `user_id` int(11) NOT NULL,
  `bank_status` int(1) NOT NULL DEFAULT '0',
  `regular_money` double(20,2) DEFAULT NULL,
  `current_money` double(20,2) DEFAULT NULL,
  `create_date` datetime NOT NULL,
  PRIMARY KEY (`bank_id`),
  KEY `u_id` (`user_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

交易记录表:

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for t_deal
-- ----------------------------
DROP TABLE IF EXISTS `t_deal`;
CREATE TABLE `t_deal` (
  `deal_id` int(11) NOT NULL AUTO_INCREMENT,
  `in_bank_id` varchar(19) COLLATE utf8_bin DEFAULT NULL,
  `out_bank_id` varchar(19) COLLATE utf8_bin DEFAULT NULL,
  `money` double(20,2) NOT NULL,
  `deal_date` datetime NOT NULL,
  `deal_type` int(1) NOT NULL,
  PRIMARY KEY (`deal_id`),
  KEY `in_bank_id` (`in_bank_id`),
  KEY `out_bank_id` (`out_bank_id`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_bin;

通过存储过程实现创建随机卡号(前八位固定后七位自增最后一位随机校验位,例:1010 3576 0000 0011)

DROP PROCEDURE my1;

create PROCEDURE my1()
BEGIN
DECLARE head varchar(19) DEFAULT '1010 3576 ';
DECLARE num int DEFAULT 1;
DECLARE len int;
DECLARE val int;
DECLARE str VARCHAR(19);
DECLARE str2 VARCHAR(19);
DECLARE str3 VARCHAR(19);
DECLARE str4 VARCHAR(19);
select IFNULL(bank_id,'1010 3576 0000 0010')into str from t_bank;
SELECT SUBSTRING(str FROM 11 FOR 4) into str2;
select SUBSTRING(str FROM 16 FOR 4) INTO str3;
select CONCAT(str2,str3) into str4;
select CONVERT(str4,SIGNED)into num;
set num=num+1;
select CONVERT(num,CHAR)into str;
select LPAD(str,7,'0')INTO str2;
select CONCAT(str2,floor(rand() * 10)) into str;
select LEFT(str,4)into str2;
select RIGHT(str,4)into str3;
select CONCAT(head,str2,' ',str3) into str;
SELECT str;
END

CALL my1();

DROP FUNCTION create_bankId;

create FUNCTION create_bankId() RETURNS VARCHAR(19)
BEGIN
DECLARE head varchar(19) DEFAULT '1010 3576 ';
DECLARE num int DEFAULT 1;
DECLARE len int;
DECLARE val int;
DECLARE str VARCHAR(19)default '1010 3576 0000 0000';
DECLARE str2 VARCHAR(19);
DECLARE str3 VARCHAR(19);
DECLARE str4 VARCHAR(19);
-- 判断数据库是否有数据
select IFNULL(bank_id,str)into str from t_bank ORDER BY create_date DESC LIMIT 0,1;
-- 截取银行卡号后七位
SELECT SUBSTRING(str FROM 11 FOR 4) into str2;
select SUBSTRING(str FROM 16 FOR 3) INTO str3;
select CONCAT(str2,str3) into str4;
-- 转为整数
select CONVERT(str4,SIGNED)into num;
set num=num+1;
-- 将自增号转为字符串
select CONVERT(num,CHAR)into str;
-- 用0补齐七位
select LPAD(str,7,'0')INTO str2;
-- 拼接随机数
select CONCAT(str2,floor(rand() * 10)) into str;
-- 追加空格
select LEFT(str,4)into str2;
select RIGHT(str,4)into str3;
-- 拼接银行卡号
select CONCAT(head,str2,' ',str3) into str;
RETURN str;
END

开户实现

DROP PROCEDURE kaihu;

CREATE PROCEDURE kaihu (
    IN uname VARCHAR (32),
    IN uuid VARCHAR (18),
    IN tel VARCHAR (11),
    IN bk_pass VARCHAR (50)
)
BEGIN

DECLARE userId INT;


DECLARE len INT;

SELECT
    COUNT(1) INTO len
FROM
    t_user
WHERE
    user_uuid = uuid;

-- 判断该用户是否开过户
IF len = 0 THEN
    -- 未开户添加用户信息
    INSERT INTO t_user(
        user_name,
        user_uuid,
        user_tel
    )
VALUES
    (uname, uuid, tel);


END IF;
-- 获取用户id

SELECT
    user_id into userId
FROM
    t_user
WHERE
    user_uuid = uuid;

-- 为用户开户
INSERT INTO t_bank(
    bank_id,
    bank_pass,
    user_id,
    current_money,
    create_date
)
VALUES
    (
        create_bankId(),
        bk_pass,
        userId,
        100,
        NOW()
    );
END 



CALL kaihu (
    '李四',
    '222222222222222222',
    '22222222',
    '123456'
);

用户修改密码

-- 修改密码
create PROCEDURE update_pass(in uuid VARCHAR(18),in id VARCHAR(19),in pass VARCHAR(20))
BEGIN
DECLARE u_id INT;
select IFNULL(user_id,0)into u_id from t_user where user_uuid=uuid;
IF u_id>0 THEN
UPDATE `t_bank`
SET 
 `bank_pass` = pass
WHERE
        `bank_id` = id
AND
user_id=u_id;
end if;
END

存取款

drop PROCEDURE save;
-- 存钱
create PROCEDURE save(in bankId VARCHAR(19),in pass VARCHAR(20),in type INT,in money DOUBLE)
BEGIN
DECLARE result int;
DECLARE money1 double;
-- 判断该用户是否存在和密码是否正确
select COUNT(1) into result from t_bank where bank_id=bankId and bank_pass=pass;
IF result=1 THEN

IF type=0 THEN -- 活期存款
SELECT IFNULL(current_money,0)into money1 from t_bank where (`bank_id`=bankId);
UPDATE `t_bank` SET `current_money`=money1+money WHERE (`bank_id`=bankId);

ELSEIF type=1 THEN -- 定期存款
SELECT IFNULL(regular_money,0) into money1 from t_bank where (`bank_id`=bankId);
UPDATE `t_bank` SET `regular_money`=money1+money WHERE (`bank_id`=bankId);
end if;
end if;
END

call save('1010 3576 0000 0026','123456',0,30);

drop PROCEDURE take;
-- 取钱
create PROCEDURE take(in bankId VARCHAR(19),in pass VARCHAR(20),in money DOUBLE)
begin
DECLARE result int;
DECLARE money1 double;
-- 判断该用户是否存在和密码是否正确
select COUNT(1) into result from t_bank where bank_id=bankId and bank_pass=pass;
IF result=1 THEN
SELECT IFNULL(current_money,0)into money1 from t_bank where (`bank_id`=bankId);
if money1-money>1 THEN
UPDATE `t_bank` SET `current_money`=money1-money WHERE (`bank_id`=bankId);
end if;
end if;
END

call take('1010 3576 0000 0012','123456',30);

交易记录监听

drop TRIGGER deal;

-- 取钱 1 存钱 2 转账 3
-- 存取款交易记录
create TRIGGER deal after UPDATE on t_bank for each ROW
BEGIN
IF old.current_money>new.current_money THEN -- 取钱
INSERT INTO `t_deal` (
    `in_bank_id`,
    `out_bank_id`,
    `money`,
    `deal_date`,
    `deal_type`
)
VALUES
    (
        null,
        new.bank_id,
        old.current_money-new.current_money,
        NOW(),
        1
    );
elseif old.current_money<new.current_money then -- 存钱
INSERT INTO `t_deal` (
    `in_bank_id`,
    `out_bank_id`,
    `money`,
    `deal_date`,
    `deal_type`
)
VALUES
    (
        new.bank_id,
        null,
        new.current_money-old.current_money,
        NOW(),
        2
    );
end if;
END

为用户提供相应查询

CREATE VIEW vw_userInfo AS SELECT
    user_name 用户名,
    user_uuid 身份证号码,
    user_tel 电话
FROM
    t_user;

SELECT
    *
FROM
    vw_userInfo
WHERE
    身份证号码 = '111111111111111111';

CREATE VIEW vw_cardInfo AS SELECT
    b.bank_id 银行卡号,
    b.bank_pass 银行卡密码,
    b.regular_money 定期余额,
    b.current_money 活期余额,
    b.create_date 开户时间,
    u.user_name 开户人,
    u.user_uuid 身份证号
FROM
    t_bank b,
    t_user u
WHERE
    u.user_id = b.user_id;

SELECT
    *
FROM
    vw_cardInfo
WHERE
    银行卡号 = '1010 3576 0000 0012';

-- 获取银行卡账户名称
create FUNCTION getName(id VARCHAR(19))RETURNS VARCHAR(32)
BEGIN
DECLARE u_name VARCHAR(32);
select u.user_name into u_name from t_user u,t_bank b where u.user_id = b.user_id and b.bank_id=id;
RETURN u_name;
END

DROP view vw_tradeInfo;

CREATE VIEW vw_tradeInfo AS SELECT
    d.deal_id 交易编号,
    d.in_bank_id 转入账号,
    IF(ISNULL(d.in_bank_id)=0,getName(d.in_bank_id),'') 转入账户人,
    d.out_bank_id 转出账号,
    IF(ISNULL(d.out_bank_id)=0,getName(d.out_bank_id),'') 转出账户人,
    d.money 交易金额,
    d.deal_date 交易时间,
    if(d.deal_type=1,'取钱',if(d.deal_type=2,'存钱','转账'))交易类型
FROM
    t_deal d;

SELECT * from vw_tradeInfo WHERE (转出账户人='张三' or 转入账户人='张三');