数据

我有几个这样的表：

CREATE TABLE cycles (
  `cycle` varchar(6) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `cycle_type` varchar(140) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `start` date DEFAULT NULL,
  `end` date DEFAULT NULL
);

CREATE TABLE rsvn (
  `str` varchar(140) COLLATE utf8mb4_unicode_ci DEFAULT NULL,
  `start_date` date DEFAULT NULL,
  `end_date` date DEFAULT NULL
);

INSERT INTO `cycles` (`cycle`, `cycle_type`, `start`, `end`) values
('202013', 'a', '2021-01-04', '2021-01-31'),
('202013', 'b', '2021-01-04', '2021-01-31'),
('202101', 'a', '2021-01-04', '2021-01-31'),
('202101', 'b', '2021-01-04', '2021-01-31'),
('202102', 'a', '2021-02-01', '2021-02-28'),
('202102', 'b', '2021-02-01', '2021-02-28'),
('202103', 'a', '2021-03-01', '2021-03-28'),
('202103', 'b', '2021-03-01', '2021-03-28');

INSERT INTO `rsvn` (str, start_date, end_date) values
('STR01367', '2020-12-07', '2020-06-21'),
('STR00759', '2020-12-07', '2021-04-25'),
('STR01367', '2021-01-04', '2021-09-12'),
('STR01367', '2021-06-21', '2022-02-27');

预期结果

对于任何给定的周期，我想计算str在周期中出现的次数，所以在周期2108 - 2108之间（一个周期），我看到：
| 串|计数器|
| - -|- -|
| STR 01367系列|一个|
| STR 00759系列|一个|
而从2108 - 2109年之间（两个周期）我看到：
| 串|计数器|
| - -|- -|
| STR 01367系列|2个|
| STR 00759系列|一个|
我所尝试的
我试图找出如何动态地获得这些结果。我没有看到UNION ALL查询（每个循环一个查询）之外的任何选项，所以我尝试编写PROCEDURE。但是，这不起作用，因为我想对查询结果进行后处理，而且我不认为您可以在CTE或子查询中使用PROCEDURE的结果。
My PROCEDURE（可以使用，但不能在SELECT * FROM call count_cycles（？）这样的子查询中包含结果）：

CREATE PROCEDURE `count_cycles`(start_cycle CHAR(6), end_cycle CHAR(6))
BEGIN
    SET @cycles := (
        SELECT CONCAT('WITH installed_cycles_count AS (',
            GROUP_CONCAT(
                CONCAT('
        SELECT rsvn.str, 1 AS installed_cycles
        FROM rsvn
        WHERE "', `cy`.`start`, '" BETWEEN rsvn.start_date AND COALESCE(rsvn.end_date, "9999-01-01")
           OR "', `cy`.`end`, '" BETWEEN rsvn.start_date AND COALESCE(rsvn.end_date, "9999-01-01")
        GROUP BY rsvn.str
    '
                )
                 SEPARATOR ' UNION ALL '
            ),
    ')

    SELECT
             store.chain AS "Chain"
            ,store.division AS "Division"
            ,dividers_store AS "Store"
            ,SUM(installed_cycles) AS "Installed Cycles"
    FROM installed_cycles_count r
    LEFT JOIN store ON store.name = r.dividers_store
    GROUP BY dividers_store
    ORDER BY chain, division, dividers_store, installed_cycles'
        )
        FROM cycles `cy`
        WHERE `cy`.`cycle_type` = 'Ad Cycle'
            AND `cy`.`cycle` >= CONCAT('20', RIGHT(start_cycle, 4))
            AND `cy`.`cycle` <= CONCAT('20', RIGHT(end_cycle, 4))
        GROUP BY `cy`.`cycle_type`
    );

    EXECUTE IMMEDIATE @cycles;
END

或者，我尝试使用递归查询通过增加周期来获得结果，这样就得到了我想要的周期：

WITH RECURSIVE xyz AS (
    SELECT cy.`cycle`, cy.`start`, cy.`end`
    FROM cycles cy
    WHERE cycle_type = 'Ad Cycle'
    AND `cycle` = '202101'

    UNION ALL

    SELECT cy.`cycle`, cy.`start`, cy.`end`
    FROM xyz
    JOIN cycles cy
        ON cy.`cycle` = increment_cycle(xyz.`cycle`, 1)
        AND cy.`cycle_type` = 'Ad Cycle'
    WHERE cy.`cycle` <= '202110'
)
SELECT * FROM xyz;

但是，当我在预订表中添加以下内容时，它无法正常工作：* 无限循环？*

WITH RECURSIVE xyz AS (
    SELECT cy.`cycle`, 'dr.dividers_store', 1 AS installed_cycles
    FROM cycles cy
    LEFT JOIN rsvn dr
        ON cy.`start` BETWEEN dr.start_date AND COALESCE(dr.end_date, "9999-01-01")
            OR cy.`end` BETWEEN dr.start_date AND COALESCE(dr.end_date, "9999-01-01")
    WHERE cy.`cycle_type` = 'Ad Cycle'
        AND cy.`cycle` = '202101'

    UNION ALL

    SELECT cy.`cycle`, 'dr.dividers_store', 1 AS installed_cycles
    FROM xyz
    JOIN cycles cy
        ON cy.`cycle` = increment_cycle(xyz.`cycle`, 1)
        AND cy.`cycle_type` = 'Ad Cycle'
    LEFT JOIN rsvn dr
        ON cy.`start` BETWEEN dr.start_date AND COALESCE(dr.end_date, "9999-01-01")
            OR cy.`end` BETWEEN dr.start_date AND COALESCE(dr.end_date, "9999-01-01")
    WHERE cy.`cycle` <= '202102'
)
SELECT * FROM xyz

我有哪些选项可以获得所需的结果，以便在CTE或子查询中使用它们？