Slacking Employees Salaries
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Suppose your company needs to cut costs due to an economic downturn. During a coffee break, you hear a rumor that a lot of money goes to employees who don’t do their work, and you decide to find out if the rumor is true.
Given two tables: employees and projects, find the sum of the salaries of all the employees who didn’t complete any of their projects.
Clarification:
We will consider a project unfinished if it has no end date (its End_dt is NULL).
Given this, we’ll say an employee didn’t finish any of their projects when:
- They were assigned at least one project.
- None of their projects have an
End_dt.
Example:
Input:
employees table
| id | salary |
|---|---|
| INTEGER | FLOAT |
projects table
| employee_id | project_id | Start_dt | End_dt |
|---|---|---|---|
| INTEGER | INTEGER | DATETIME | DATETIME |
Output:
| total_slack_salary |
|---|
| INTEGER |
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