Jump to level 1 What type of join is the query? Select all that apply. SELECT Song1. Title, Song2. Title FROM Song As Song1, Song As Song2 WHERE Song1. Length > Song2. Length Equijoin Non-equijoin Self-join Cross-join Check How was this section?

The query provided involves the following types of joins: 1. **Non-equijoin** - **Explanation:** A non-equijoin occurs when the join condition uses operators other than equality (e.g., `<`, `>`, `!=`). In your query, the condition `Song1.Length > Song2.Length` uses the greater than (`>`) operator, making it a non-equijoin. 2. **Self-join** - **Explanation:** A self-join is when a table is joined to itself. In the query, the `Song` table is referenced twice with different aliases (`Song1` and `Song2`), indicating that it's a self-join. ### Summary: - **Non-equijoin:** ✔️ - **Self-join:** ✔️ - **Equijoin:** ❌ (since the join condition is not based on equality) - **Cross-join:** ❌ (a cross join produces a Cartesian product without a specific join condition) --- **How was this section?** If you're referring to the clarity and structure of the section, it seems well-organized and effectively highlights the different types of joins with appropriate explanations. If you have specific feedback or need further clarification on any part, feel free to ask!