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Employees With Missing Information

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	`1`	`+Link: https://leetcode.com/problems/employees-with-missing-information/`
	`2`	`+Tool: MS SQL Server`
	`3`	`+`
	`4`	`+`
	`5`	`+`
	`6`	`+`
	`7`	`+`
	`8`	`+`
	`9`	`+select isnull(e.employee_id,s.employee_id) as 'employee_id'`
	`10`	`+from Employees e full outer join Salaries s`
	`11`	`+on e.employee_id = s.employee_id`
	`12`	`+where e.name is null or s.salary is null`
	`13`	`+order by 'employee_id'`

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