间隔 7 天的 MySQL/MariaDB 组

Question

数据库版本：MySQL 8+ 和 10.5.8-MariaDB。

也可以在此小提琴上找到一些数据示例。

CREATE TABLE `vicidial_closer_log` (
  `closecallid` int(9) unsigned NOT NULL AUTO_INCREMENT,
  `call_date` datetime DEFAULT NULL,
  `phone_number` varchar(18) COLLATE utf8_unicode_ci DEFAULT NULL,
  `uniqueid` varchar(20) COLLATE utf8_unicode_ci NOT NULL DEFAULT '',
  PRIMARY KEY (`closecallid`),
  KEY `call_date` (`call_date`),
  KEY `uniqueid` (`uniqueid`),
  KEY `phone_number` (`phone_number`),
  KEY `dt_phone` (`call_date`,`phone_number`),
  KEY `dt_phone_uniqueid` (`call_date`,`phone_number`,`uniqueid`)
) ENGINE=MyISAM  DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci ;

insert into `vicidial_closer_log`(call_date,phone_number,uniqueid) values
('2023-01-17 16:01:25','1000106338','1673708481.829754'),
('2023-01-17 16:02:04','1000106338','1673708519.829761'),
('2023-01-19 18:20:23','1000106338','1673889620.853236'),
('2023-01-19 18:27:04','1000106338','1673890021.853302'),
('2023-01-22 15:30:09','1000106338','1674138607.888573'),
('2023-01-22 15:53:06','1000106338','1674139983.888844'),
('2023-01-22 15:53:32','1000106338','1674140009.888856'),
('2023-01-22 15:54:15','1000106338','1674140052.888863'),
('2023-01-22 15:54:51','1000106338','1674140088.888874'),
('2023-01-22 15:55:56','1000106338','1674140153.888888'),
('2023-01-22 15:56:36','1000106338','1674140193.888895'),
('2023-01-27 11:06:40','1000106338','1674554798.944512');  

我尝试了什么？

我可以通过创建另一个表并使用触发器保存每个数字的结果（unika，doppia）来解决这个问题，但我无法仅使用查询找到解决方案。

我在2023-01-27 11:06:40上给出的上述数据示例的问题查询应返回 0(unika)。 像下面这样的东西：

1000106338   2023-01-17 16:01:25 ----- > unika
1000106338   2023-01-17 16:02:04 ----- > doppia
1000106338   2023-01-19 18:20:23 ----- > doppia
1000106338   2023-01-19 18:27:04 ----- > doppia
1000106338   2023-01-22 15:30:09 ----- > doppia
1000106338   2023-01-22 15:53:06 ----- > doppia
1000106338   2023-01-22 15:53:32 ----- > doppia
1000106338   2023-01-22 15:54:15 ----- > doppia
1000106338   2023-01-22 15:54:51 ----- > doppia
1000106338   2023-01-22 15:55:56 ----- > doppia
1000106338   2023-01-22 15:56:36 ----- > doppia 
1000106338   2023-01-27 11:06:40 ----- > unika

每个号码的第一个条目应该是 unika，如果接下来的 7 天再次输入相同的号码，则应该是 doppia，在第 8 天，再次出现 unika

Answer 1

WITH RECURSIVE
enumerated AS (
  SELECT *, ROW_NUMBER() OVER (ORDER BY call_date) rn
  FROM vicidial_closer_log
),
marked AS (
  SELECT *, call_date AS last_date, CAST('unica' AS CHAR(6)) AS mark
  FROM enumerated 
  WHERE rn = 1
UNION ALL
  SELECT enumerated.*,
         CASE WHEN marked.last_date > enumerated.call_date - INTERVAL 7 DAY
              THEN marked.last_date
              ELSE enumerated.call_date
              END,
         CASE WHEN marked.last_date > enumerated.call_date - INTERVAL 7 DAY
              THEN 'doppia'
              ELSE 'unica'
              END  
  FROM enumerated
  JOIN marked ON enumerated.rn = marked.rn + 1
)
SELECT closecallid, call_date, phone_number, uniqueid, mark
FROM marked 
ORDER BY call_date;

小提琴