创建一个表，其中包含从1到最大可能目标数的数字，即。

CREATE TABLE numbers (
    num INT PRIMARY KEY
);
INSERT INTO numbers VALUES (1), (2), (3), (4), (5), (6), ...

然后可以将此表与原始表联接：

SELECT num AS Goal, `Match`, Team
FROM numbers
JOIN (
    SELECT Team1 AS Team, goal1 AS goals, `Match`
    FROM matches
    UNION
    SELECT Team2 AS Team, goal2 AS goals, `Match`
    FROM matches
) ON num <= goals

mysql中的while循环语法示例：

delimiter //

CREATE procedure yourdatabase.while_example()
wholeblock:BEGIN
  declare str VARCHAR(255) default '';
  declare x INT default 0;
  SET x = 1;

  WHILE x <= 5 DO
    SET str = CONCAT(str,x,',');
    SET x = x + 1;
  END WHILE;

  select str;
END//

打印内容：

mysql> call while_example();
+------------+
| str        |
+------------+
| 1,2,3,4,5, |
+------------+

mysql中的for循环语法示例：

delimiter //

CREATE procedure yourdatabase.for_loop_example()
wholeblock:BEGIN
  DECLARE x INT;
  DECLARE str VARCHAR(255);
  SET x = -5;
  SET str = '';

  loop_label: LOOP
    IF x > 0 THEN
      LEAVE loop_label;
    END IF;
    SET str = CONCAT(str,x,',');
    SET x = x + 1;
    ITERATE loop_label;
  END LOOP;

  SELECT str;

END//

打印内容：

mysql> call for_loop_example();

    +-------------------+
    | str               |
    +-------------------+
    | -5,-4,-3,-2,-1,0, |
    +-------------------+
    1 row in set (0.00 sec)

辅导的：http://www.mysqltutorial.org/stored-procedures-loop.aspx