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Write a SQL query to rank shows by daily viewership across different regions

SQLmedium0.2 min read

Reviewed by Aditya Kumar · Last reviewed 2026-03-24

SELECT show_id, region, date, viewership, RANK() OVER (PARTITION BY region, date ORDER BY viewership DESC) AS rank FROM viewership. Add show name via JOIN. **Why RANK**: Ties share rank (e.g., same viewership). DENSE_RANK for no gaps....

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Frequency
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Asked at 1 company
Category
487
questions in SQL
Difficulty Split
130E|271M|86H
in this category
Total Bank
1,863
across 7 categories
Part of the SQL Query Optimization & Indexing Interview Preparation Hub
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Key Concepts Tested
joinpartitionsql
Expert Answer
43 words

SELECT show_id, region, date, viewership, RANK() OVER (PARTITION BY region, date ORDER BY viewership DESC) AS rank FROM viewership. Add show name via JOIN. Why RANK: Ties share rank (e.g., same viewership). DENSE_RANK for no gaps. Scalability: Partition by (region, date) for pruning.

⚡
Pro Tip

Red Flag: No partition—global rank only. Pro-Move: 'RANK per region/date; materialized for dashboard performance.'

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