유도 된 테이블을 사용하여이 SQL을 단일 명령문으로 표현하는 방법을 설명하십시오.

Question

제 자신의 능력으로는 임시 테이블을 사용하지 않고이 SQL 기능을 단일 명령문에 작성하려고합니다. 필자의 삶에서 MySQL을 가져 오지 않고 쿼리를 가져올 수 없습니다. "오류 1248 (42000) : 모든 파생 테이블에는 고유 한 별칭이 있어야합니다."

여기에 유사한 일이있어, 고장 임에도 불구하고, 내가 원하는 무엇 : 도움을

CREATE TEMPORARY TABLE weightsum (share INT, sum INT); 

INSERT INTO weightsum (share, sum) 
SELECT split.share, SUM(weight) AS sum 
FROM split 
GROUP BY split.share; 

CREATE TEMPORARY TABLE summary (share INT, weight INT, creditor INT, debtor INT, amount DECIMAL(10,2)); 

INSERT INTO summary (share, weight, creditor, debtor, amount) 
SELECT split.share, split.weight, split.creditor, split.debtor, share.amount 
FROM (split LEFT JOIN share ON split.share = share.id) 
WHERE debtor = 6 OR creditor = 6; 

SELECT summary.share, summary.weight, weightsum.sum, summary.creditor, summary.debtor, summary.amount, ((summary.amount/weightsum.sum) * summary.weight) AS split_amount 
FROM summary LEFT JOIN weightsum 
ON summary.share = weightsum.share; 

감사 : 여기

SELECT split.share, split.weight, split.creditor, split.debtor, share.amount, wsum.sum 
FROM (
    SELECT split.share, split.weight, split.creditor, split.debtor, share.amount 
    FROM (split LEFT JOIN share ON split.share = share.id) 
    WHERE debtor = 6 OR creditor = 6) 
    LEFT JOIN (
     SELECT split.share, SUM(weight) AS sum 
     FROM split 
     GROUP BY split.share 
    ) wsum 
    ON split.share = wsum.share; 

내가 임시 테이블을 사용하여 표현하기 위해 노력하고있어의 작업 버전입니다 .

Answer 1

이 시도 : 더 정확하게 작성

SELECT split.share, split.weight, split.creditor, split.debtor, share.amount, wsum.sum 
FROM (
    SELECT split.share, split.weight, split.creditor, split.debtor, share.amount 
    FROM split 
    LEFT JOIN share 
    ON split.share = share.id 
    WHERE debtor = 6 OR creditor = 6 
) As split 
LEFT JOIN (
    SELECT split.share, SUM(weight) AS sum 
    FROM split 
    GROUP BY split.share 
) wsum 
ON split.share = wsum.share; 

또는 :

SELECT split.share, split.weight, split.creditor, split.debtor, share.amount, wsum.sum 
FROM split 
LEFT JOIN share 
ON split.share = share.id 
LEFT JOIN (
    SELECT split.share, SUM(weight) AS sum 
    FROM split 
    GROUP BY split.share 
) wsum 
ON split.share = wsum.share 
WHERE split.debtor = 6 OR split.reditor = 6;