Question: UNION ALL Set Operator

Check your understanding of set operator UNION ALL.

Question

Let’s say you’re part of a team that is managing a database, consisting of three tables, for your company. One of the table is Employees, which holds important details like names and salaries. The second table, Skills, contains information about the employee’s skills. The third table is named Projects, and it holds the information regarding the projects. The table structures are as follows:

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