Question: What is a subquery, and how is it different from a JOIN?Answer: A subquery is a query nested within another query, returning a single value or a set of values. JOIN combines rows from two or more tables based on a related column. |
Is it helpful?
Yes
No
Most helpful rated by users:
- Explain the concept of ACID properties in the context of databases.
- What is the purpose of the WHERE clause in a PostgreSQL query?