エラーコード1241：オペランドには1列が含まれている必要があります。どうしましたか？

Question

SELECT 
    SUM(CASE 
     WHEN db1.card_type = 'debit' THEN 1 
     ELSE 0 
    END) AS DEBIT, 
    SUM(CASE 
     WHEN db1.card_type = 'credit' THEN 1 
     ELSE 0 
    END) AS CREDIT, 
    DATE_FORMAT(Latest, '%Y-%m') AS Dato 
FROM 
    (SELECT 
     pp.debtor_id, pp.card_type, MAX(pp.created) AS Latest 
    FROM 
     capital.credit_card cc 
    JOIN capital.card_to_debtor ctd ON cc.id = ctd.card_id 
     AND debtor_id IN (SELECT 
      fs.debtor_id, fs.created, fs.reason 
     FROM 
      analysis.full_settlement fs 
     WHERE 
      ((reason = 'BANK_PAYMENT' 
       OR fs.reason = 'CARD_PAYMENT') 
       AND fs.amount < 0) 
       OR fs.REASON = 'TRIVIAL_BALANCE' 
       OR fs.id = 13793327 
       OR fs.id = 7451808) 
    JOIN analysis.full_settlement fs ON fs.debtor_id = ctd.debtor_id 
    JOIN (SELECT 
     p.debtor_id, ccc.card_type, p.created 
    FROM 
     capital.payment p 
    JOIN capital.card_subscription cs ON cs.id = p.subscription_id 
    JOIN (SELECT 
     cc.id, ctd.card_id, cc.card_type, ctd.debtor_id 
    FROM 
     capital.card_to_debtor ctd 
    JOIN capital.credit_card cc ON cc.id = ctd.card_id) ccc ON ccc.card_id = cs.card_id 
     AND ccc.debtor_id = p.debtor_id) pp ON fs.debtor_id = pp.debtor_id 
     AND pp.created <= fs.created 
    GROUP BY pp.debtor_id , fs.created) db 
     JOIN 
    (SELECT 
     p.debtor_id, ccc.card_type, p.created 
    FROM 
     capital.payment p 
    JOIN capital.card_subscription cs ON cs.id = p.subscription_id 
    JOIN (SELECT 
     cc.id, ctd.card_id, cc.card_type, ctd.debtor_id 
    FROM 
     capital.card_to_debtor ctd 
    JOIN capital.credit_card cc ON cc.id = ctd.card_id) ccc ON ccc.card_id = cs.card_id 
     AND ccc.debtor_id = p.debtor_id) db1 ON db1.debtor_id = db.debtor_id 
     AND db1.created = db.Latest 
GROUP BY YEAR(Latest) , MONTH(Latest) 

Answer 1

debtor_id IN (SELECT 
      fs.debtor_id, fs.created, fs.reason 

debtor_id 1列であるので、あなたは、唯一の他の列と比較することができます。それを

debtor_id IN (SELECT 
       fs.debtor_id FROM...