[SQL] 연도별 대장균 크기의 편차 구하기_240910

SQL/1주차/JY_연도별_대장균_크기의_편차_구하기.sql

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+-- https://school.programmers.co.kr/learn/courses/30/lessons/299310
+-- year, year_dev, id
+-- WITH 가상테이블 AS()
+
+WITH MAX_COLONY AS(
+    SELECT YEAR(DIFFERENTIATION_DATE) AS YEAR, MAX(SIZE_OF_COLONY) AS MC
+    FROM ECOLI_DATA
+    GROUP BY YEAR(DIFFERENTIATION_DATE)
+)
+
+SELECT YEAR(C.DIFFERENTIATION_DATE) AS YEAR, 
+       M.MC-C.SIZE_OF_COLONY AS YEAR_DEV,
+       C.ID
+FROM ECOLI_DATA C
+JOIN MAX_COLONY M
+ON YEAR(C.DIFFERENTIATION_DATE) = M.YEAR
+ORDER BY M.YEAR, YEAR_DEV;