Join Multiple Conditions — Solution & ExplanationProblems / Join Multiple Conditions / EditorialApproach

JOIN with two conditions: e.department = t.department AND e.skill_level >= t.min_skill_level.

The equality condition ensures employees only see tasks in their department.

The inequality condition filters to tasks the employee is qualified for.

Key InsightJoin conditions aren't limited to equality. Using >= in the ON clause is a common pattern for range-based or qualification-based matching. Each employee can match multiple tasks and vice versa.Hints

The ON clause can contain multiple conditions combined with AND.

The first condition (department match) is an equality; the second (skill level) is an inequality.

In PySpark, build a compound condition with & and pass it to .join().

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