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90. EXISTS for Departments with Employees

Medium Infosys Subqueries & CTEs
Query Rules
  • The query columns and order must match the expected result schema.
  • NULL values should be handled appropriately where applicable.
  • The grader compares output values and sorting order to evaluate.

Schema Browser

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locations
3 cols
departments
3 cols
employees
6 cols
orders
6 cols

Reference Solution

Expected SQL 
SELECT * FROM departments d WHERE EXISTS (SELECT 1 FROM employees e WHERE e.dept_id = d.dept_id);
SQL Editor
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Console Output

Console Terminal

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