MySQL Transpose
Before NAME Subject Grade Den History A River History B Paris History C River Math A Den Math B Jay Math C SELECT Subject, MAX(IF(Grade = 'A', Name, NULL)) AS A, MAX(IF(Grade = 'B', Name, NULL)) AS B, MAX(IF(Grade = 'C', Name, NULL)) AS C, FROM TABLE GROUP BY Subject; After Subject A B C History Den River Paris Math River Den Jay 어렵게 생각하다가 시간을 많이 썼다..
2023. 1. 25.