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CREATE TABLE members(ID INT,Name VARCHAR(50));

INSERT INTO members VALUES (7,'DD');

CREATE TABLE clubhouse(id INT,members VARCHAR(50));

INSERT INTO clubhouse VALUES (55,'["7","8","9"]');
select *
from members m
where exists (
select 1
from clubhouse c
where json_contains(c.members, concat('"', m.id, '"'))
AND c.id = 55
)
ID Name
7 DD