Commit 518ae2c

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Added tasks 183-185.

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	`1`	`+# Write your MySQL query statement below`
	`2`	`+SELECT c.Name as Customers`
	`3`	`+FROM Customers as c`
	`4`	`+LEFT JOIN Orders as o`
	`5`	`+ON c.Id = o.CustomerId`
	`6`	`+WHERE o.CustomerId is null`

Lines changed: 16 additions & 0 deletions

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	`1`	`+# Write your MySQL query statement below`
	`2`	`+SELECT`
	`3`	`+ d.Name AS Department,`
	`4`	`+ Sel.Name AS Employee,`
	`5`	`+ Sel.Salary AS Salary`
	`6`	`+FROM`
	`7`	`+(`
	`8`	`+ SELECT`
	`9`	`+ Name,`
	`10`	`+ Salary,`
	`11`	`+ DepartmentId,`
	`12`	`+ DENSE_RANK() OVER (PARTITION BY DepartmentId ORDER BY Salary DESC) AS dr`
	`13`	`+ FROM Employee`
	`14`	`+) AS Sel`
	`15`	`+INNER JOIN Department d ON d.Id = Sel.DepartmentId`
	`16`	`+WHERE Sel.dr = 1`

Lines changed: 13 additions & 0 deletions

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	`1`	`+# Write your MySQL query statement below`
	`2`	`+SELECT d.Name AS Department, e.Name AS Employee, e.Salary`
	`3`	`+FROM Employee e`
	`4`	`+JOIN Department d`
	`5`	`+ON e.DepartmentId = d.Id`
	`6`	`+WHERE e.Salary IN (`
	`7`	`+ SELECT e2.Salary FROM (`
	`8`	`+ SELECT DISTINCT e3.Salary FROM Employee e3`
	`9`	`+ WHERE e3.DepartmentID = d.Id`
	`10`	`+ ORDER BY e3.Salary DESC`
	`11`	`+ LIMIT 3`
	`12`	`+ ) AS e2`
	`13`	`+);`

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