업데이트 fiedl 에서레스와 함께하는 경우 조건

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postgres 업데이트하는 경우 상태 쿼리

update t1 
  set current_location = 
    case t2.status
        when 0 then 'Deployed'
        when 1 then 'Retrieved'
        when 2 then 'Lost'
    end
from t2 inner join t3
   on t2.some_id = t3.some_id
where t3.serial_number = t1.serial_number;

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