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Home/Questions/Python/Coding/List every combination of dept_name, employee_name, and city such that the employee belongs to the department and the same city in which the department is located.

List every combination of dept_name, employee_name, and city such that the employee belongs to the department and the same city in which the department is located.

Python/Codingmedium0.6 min readPremium
Frequency
Low
Asked at 1 company
Category
179
questions in Python/Coding
Difficulty Split
127E|24M|28H
in this category
Total Bank
1,863
across 7 categories
Asked at these companies
Freight Tiger
Key Concepts Tested
join
Expert AnswerPremium
112 wordsInterview-ready
**Why Join + Same-Location Filter:** Business rule: employee must be in dept AND colocated. The join condition e.city = d.city enforces referential locality—critical for org hierarchy and location-based access control. **Query Design:** JOIN on dept_id plus e.city = d.city. Alternative: JOIN on (dept_id, city) as composite key if indexed—can be faster....
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