DROP TABLE IF EXISTS a;
DROP TABLE IF EXISTS b;
-- 创建b表
CREATE TABLE b
(b1 INT NOT NULL,
 b2 BIGINT(20),
 b3 VARCHAR(50),
 CONSTRAINT PRIMARY KEY (b1)
);
-- 插入b表数据
INSERT INTO b VALUES (1001,201303,'b1');
INSERT INTO b VALUES (1002,201403,'b2');
INSERT INTO b VALUES (1003,201503,'b3');
INSERT INTO b VALUES (1004,201603,'b3');
INSERT INTO b VALUES (1005,201703,'b3');
INSERT INTO b VALUES (1006,201803,'b3');
-- 创建a表
CREATE TABLE a
(a1 INT NOT NULL,
 a2 VARCHAR(50),
 a3 BIGINT(20),
 b1 INT,
 CONSTRAINT PRIMARY KEY(a1),
 CONSTRAINT fk_b1 FOREIGN KEY (b1) REFERENCES b (b1)
);
-- 插入a表数据
INSERT INTO a VALUES (1,'SB01',20130301,1001);
INSERT INTO a VALUES (2,'SB02',20140302,1002);
INSERT INTO a VALUES (3,'SB03',20150303,1003);
-- 创建存储过程
CREATE PROCEDURE spInsa
(v_a1 INT,
 v_a2 VARCHAR(50),
 v_b1 INT
)
BEGIN
DECLARE v_b2 BIGINT(20);
DECLARE v_a3 BIGINT(20);
SELECT b2 INTO v_b2 FROM b WHERE b1=v_b1;
SET v_a3=CONCAT(v_b2,(v_a2+0));-- a3的数据是b2的数据和a2数据中数字部分联合组成的
INSERT INTO a VALUES
(v_a1,
 v_a2,
 v_a3,
 v_b1
);
END;

CALL spInsa(4,'SB04',1004);

mysql> create procedure spInsa(v_a1 int,v_a2 varchar(50),v_b1 int)
    -> begin
    -> declare v_b2 bigint(20);
    -> declare v_a3 bigint(20);
    -> select b2 into v_b2 from b where b1=v_b1;
    -> set v_a3 = concat(v_b2,substring(v_a2,3,2));
    -> insert into a values (v_a1,v_a2,v_a3,v_b1);
    -> end //
Query OK, 0 rows affected (0.00 sec)

mysql> call spInsa(4,'SB04',1004)//
Query OK, 1 row affected (0.03 sec)

mysql> select * from a where a1 =4 //
+----+------+----------+------+
| a1 | a2   | a3       | b1   |
+----+------+----------+------+
|  4 | SB04 | 20160304 | 1004 |
+----+------+----------+------+
1 row in set (0.00 sec)