What is a primary difference between executing queries in raw SQL versus using Hibernate code?

• A. Raw SQL is less reliable
• B. Hibernate code does not produce any result
• C. Both produce the same result but raw SQL is shorter
• D. Hibernate is only for complex queries

Answer: (C)

The primary difference between executing queries in raw SQL and using Hibernate is best captured by the notion that both can produce the same results, but the syntax and structure of raw SQL is typically shorter and more concise.

When writing raw SQL, the focus is on directly interacting with the database using standard SQL syntax, which is straightforward and often concise for simple queries. On the other hand, Hibernate abstracts database interactions by allowing developers to write queries using Java code through its criteria or HQL (Hibernate Query Language). While Hibernate can handle complex query scenarios and adds capabilities such as object-relational mapping (ORM), the framework tends to require more lines of code to achieve what can be done in a single SQL statement.

This approach can make Hibernate better for managing more complex data manipulations, connections, and data lifecycle management due to its capability to maintain the state of objects. However, when it comes to simpler queries, raw SQL often allows for quicker and more direct interaction with the database, highlighting a key difference in execution and development style between the two methods.