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이예진: [SQL] Department Top Three Salaries_241210

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	`1`	`+SELECT`
	`2`	`+ d.name Department, er.name Employee, salary`
	`3`	`+FROM (`
	`4`	`+SELECT`
	`5`	`+ departmentId, name, salary,`
	`6`	`+ DENSE_RANK() OVER(PARTITION BY departmentId ORDER BY salary DESC) 'rank'`
	`7`	`+ FROM Employee`
	`8`	`+ GROUP BY departmentId, name, salary`
	`9`	`+ ORDER BY departmentId`
	`10`	`+) er`
	`11`	`+INNER JOIN Department d`
	`12`	`+ON er.departmentId = d.id`
	`13`	`+WHERE er.rank <= 3;`

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