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SELECT lott.id as lottery_id,lott.abbr,lott.currency,payments.id as payment_id,
    payment_prizes.prize_id,prizes.name,prizes.currency as prizes_currency
    FROM lotteries lott 
    JOIN lottery_payments payments 
        ON
        payments.lottery_id =  lott.id
    JOIN lottery_payment_prizes payment_prizes
        ON
        payment_prizes.payment_id = payments.id
    JOIN lottery_prizes prizes
        ON
        prizes.id =  payment_prizes.prize_id
    WHERE lott.currency = "ID"

我需要更新 lottery_prizes 表中的所有货币,其中 id 来自上面的查询。我做了这个

UPDATE lottery_prizes SET currnecy = 'ID'
 WHERE id IN(SELECT prizes.id
    FROM lotteries lott 
    JOIN lottery_payments payments 
        ON
        payments.lottery_id =  lott.id
    JOIN lottery_payment_prizes payment_prizes
        ON
        payment_prizes.payment_id = payments.id
    JOIN lottery_prizes prizes
        ON
        prizes.id =  payment_prizes.prize_id
    WHERE lott.currency = "ID")

我有这个错误:
/* SQL 错误(1093):您不能在 FROM 子句中指定目标表 'lottery_prizes' 进行更新 */ 谢谢大家

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1 回答 1

6
  UPDATE lottery_prizes l 
   JOIN (SELECT prizes.id
      FROM lotteries lott 
      JOIN lottery_payments payments 
          ON
          payments.lottery_id =  lott.id
      JOIN lottery_payment_prizes payment_prizes
          ON
          payment_prizes.payment_id = payments.id
      JOIN lottery_prizes prizes
          ON
          prizes.id =  payment_prizes.prize_id
      WHERE lott.currency = "ID") t
      ON t.Id = l.Id
 SET currency = 'ID'          
于 2010-12-15T12:27:40.140 回答