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Your hopes are not in vain select person_id , zones from ( select person_id , zones , find_in_set('301', zones) > 0 as has301 , find_in_set('401', zones) > 0 as has401 , find_in_set('501', zones) > 0 as has501 from ahtest ) checks WHERE has301 + has401 + has501 > 1;

Yes No. If you want to pay someone to do it for you, post in the "job Offerings" forum. Otherwise, post the code you have already and tell us where you are having probems so we can help you with your coding.

I'll eat my words. I couldn't resist the challenge so, having slept on it, I wrote a an SQL function "isConsecutive(dates)" to find records where there are fewer than 10 dates and they are consecutive. TEST DATA and QUERY TABLE: ahtest +----+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | id | adates | +----+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ | 1 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | | 2 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-08 12:00,2021-04-10 12:00,2021-04-11 12:00,2021-04-12 12:00,2021-04-13 12:00,2021-04-14 12:00 | | 3 | 2021-04-01 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-10 12:00,2021-04-11 12:00,2021-04-12 12:00 | | 4 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-10 12:00,2021-04-11 12:00 | | 5 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-11 12:00,2021-04-12 12:00,2021-04-13 12:00 | | 6 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-09 12:00 | | 7 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-06 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-11 12:00,2021-04-12 12:00,2021-04-13 12:00 | | 8 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | | 9 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-11 12:00,2021-04-13 12:00,2021-04-15 12:00 | | 10 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-10 12:00,2021-04-11 12:00,2021-04-13 12:00,2021-04-14 12:00 | | 11 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-04 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-10 12:00,2021-04-11 12:00,2021-04-12 12:00,2021-04-13 12:00,2021-04-14 12:00 | | 12 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-09 12:00,2021-04-10 12:00,2021-04-11 12:00,2021-04-12 12:00 | | 13 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-10 12:00,2021-04-11 12:00,2021-04-13 12:00 | | 14 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | | 15 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-10 12:00,2021-04-11 12:00 | | 16 | 2021-04-01 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-10 12:00,2021-04-11 12:00 | | 17 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-09 12:00,2021-04-10 12:00,2021-04-11 12:00 | | 18 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | | 19 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00,2021-04-10 12:00 | | 20 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-06 12:00,2021-04-08 12:00,2021-04-10 12:00,2021-04-11 12:00,2021-04-12 12:00,2021-04-13 12:00,2021-04-14 12:00,2021-04-15 12:00 | +----+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+ mysql> SELECT id -> , adates -> FROM ahtest -> WHERE isConsecutive(adates); +----+-----------------------------------------------------------------------------------------------------------------------------------------+ | id | adates | +----+-----------------------------------------------------------------------------------------------------------------------------------------+ | 1 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | | 8 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | | 14 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | | 18 | 2021-04-01 12:00,2021-04-02 12:00,2021-04-03 12:00,2021-04-04 12:00,2021-04-05 12:00,2021-04-06 12:00,2021-04-07 12:00,2021-04-08 12:00 | +----+-----------------------------------------------------------------------------------------------------------------------------------------+ THE FUNCTION DELIMITER $$ CREATE FUNCTION `isConsecutive`(dates varchar(255)) RETURNS int(11) BEGIN DECLARE k INTEGER DEFAULT 1; DECLARE da DATE DEFAULT SUBSTRING_INDEX(dates, ',', 1); DECLARE db DATE ; DECLARE num INTEGER DEFAULT (LENGTH(dates)+1) DIV 17; DECLARE strx VARCHAR(255) DEFAULT SUBSTRING_INDEX(dates, ',', -(num-k)); DECLARE isconsec INTEGER DEFAULT 1; IF num >= 10 THEN RETURN 0; END IF; WHILE LENGTH(strx) > 0 DO SET db = SUBSTRING_INDEX(strx, ',', 1); if DATEDIFF(db, da) <> 1 THEN SET isconsec = 0; END IF; SET k = k + 1; SET da = SUBSTRING_INDEX(strx, ',', 1); SET strx = SUBSTRING_INDEX(strx, ',', -(num-k)); END WHILE; RETURN isconsec; END$$ DELIMITER ;