Practice SQL Questions and Answers
- What is the output of this SQL snippet if the price column contains NULL values? SELECT SUM(price) FROM products;
- Which SQL command is used to remove a table completely?
- Which SQL clause is used for filtering rows?
- Which SQL function returns the number of rows in a table?
- Which SQL clause is used to group rows?
- Which command removes all rows but keeps table structure?
- Which SQL keyword prevents duplicate rows in result?
- Which SQL feature allows hierarchical queries (e.g., org chart traversal)?
- In SQL, the ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW clause applies to:
- A materialized view differs from a normal view because it:
- Recursive CTEs are mainly used for:
- ROW_NUMBER() OVER (PARTITION BY dept ORDER BY salary DESC) assigns:
- Materialized views differ from normal views because:
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