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고다혜: [SQL] Odd And Even Transactions_241217

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	`1`	`+WITH EVEN AS (`
	`2`	+ SELECT TRANSACTION_DATE, SUM(AMOUNT) `amount`
	`3`	`+ FROM TRANSACTIONS`
	`4`	`+ WHERE MOD(AMOUNT, 2) = 0`
	`5`	`+ GROUP BY TRANSACTION_DATE`
	`6`	`+), ODD AS (`
	`7`	+ SELECT TRANSACTION_DATE, SUM(AMOUNT) `amount`
	`8`	`+ FROM TRANSACTIONS`
	`9`	`+ WHERE MOD(AMOUNT, 2) = 1`
	`10`	`+ GROUP BY TRANSACTION_DATE`
	`11`	`+)`
	`12`	`+`
	`13`	+SELECT DISTINCT(a.TRANSACTION_DATE) `transaction_date`
	`14`	+ , IFNULL(c.AMOUNT, 0) `odd_sum`
	`15`	+ , IFNULL(b.AMOUNT, 0) `even_sum`
	`16`	`+FROM TRANSACTIONS a`
	`17`	`+ LEFT JOIN EVEN b ON a.transaction_date = b.transaction_date`
	`18`	`+ LEFT JOIN ODD c ON a.transaction_date = c.transaction_date`
	`19`	`+ORDER BY transaction_date`
	`20`	`+`
	`21`	`+------------------------------------------`
	`22`	`+`
	`23`	`+SELECT transaction_date`
	`24`	+ , SUM(CASE WHEN MOD(AMOUNT, 2) = 1 THEN AMOUNT ELSE 0 END) `odd_sum`
	`25`	+ , SUM(CASE WHEN MOD(AMOUNT, 2) = 0 THEN AMOUNT ELSE 0 END) `even_sum`
	`26`	`+FROM TRANSACTIONS`
	`27`	`+GROUP BY TRANSACTION_DATE`
	`28`	`+ORDER BY TRANSACTION_DATE`

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