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이지영: [SQL] 연간 평가점수에 해당하는 등금 및 성과금 조회하기_250226

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	`1`	`+-- 연간 평가점수에 해당하는 평가 등급 및 성과금 조회하기`
	`2`	`+-- https://school.programmers.co.kr/learn/courses/30/lessons/284528`
	`3`	`+SELECT`
	`4`	`+ E.EMP_NO, E.EMP_NAME,`
	`5`	`+ CASE`
	`6`	`+ WHEN AVG(G.SCORE) >= 96 THEN 'S'`
	`7`	`+ WHEN AVG(G.SCORE) >= 90 THEN 'A'`
	`8`	`+ WHEN AVG(G.SCORE) >= 80 THEN 'B'`
	`9`	`+ ELSE 'C'`
	`10`	`+ END AS GRADE,`
	`11`	`+ CASE`
	`12`	`+ WHEN AVG(G.SCORE) >=96 THEN E.SAL*0.2`
	`13`	`+ WHEN AVG(G.SCORE) >=90 THEN E.SAL*0.15`
	`14`	`+ WHEN AVG(G.SCORE) >=80 THEN E.SAL*0.1`
	`15`	`+ ELSE 0`
	`16`	`+ END AS BONUS`
	`17`	`+FROM HR_EMPLOYEES E`
	`18`	`+LEFT JOIN HR_GRADE G`
	`19`	`+ON E.EMP_NO = G.EMP_NO`
	`20`	`+GROUP BY E.EMP_NO`
	`21`	`+ORDER BY E.EMP_NO`

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