SQL Quest › SQL Interview Questions › Aggregation & Grouping
Bank Count Per State
How many top-200 banks are headquartered in each state? Show state, bank_count. Order by bank_count descending, then state ascending. Useful for understanding regulatory exposure concentration.
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Schema
institutions
| cert | name | city | state | zip | charter_class | established_date | total_assets | total_deposits | total_equity | office_count | bank_class |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 628 | JPMorgan Chase Bank, National Association | Columbus | OH | 43240 | 8 | 01/01/1824 | 3752662000 | 2697842000 | 335936000 | 5335 | N |
| 3510 | Bank of America, National Association | Charlotte | NC | 28202 | 13044 | 10/17/1904 | 2636823000 | 2101968000 | 246250000 | 3840 | N |
| 7213 | Citibank, National Association | Sioux Falls | SD | 57108 | 1461 | 06/16/1812 | 1836436000 | 1465300000 | 176530000 | 958 | N |
Expected output: Each state with its bank count
Hint
Concepts
SELECT GROUP BY Aggregation ORDER BY
Practise the topic: SQL practice questions · GROUP BY exercises
Read the concept: How to find duplicates in SQL
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