Certainly, here are some SQL query questions focusing on various types of joins using the AdventureWorks database:
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Inner Join:
- Retrieve a list of employees along with their respective department names.
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Left Join:
- List all customers and their associated sales orders, including customers who have not placed any orders.
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Right Join:
- Display all products and their corresponding sales order details, ensuring that all products are listed even if they have not been sold.
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Full Outer Join:
- Generate a list of all vendors and the products they supply, including vendors without products and products without vendors.
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Self Join:
- Identify employees who share the same job title within the organization.
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Cross Join:
- Create a combination of all product categories and subcategories to analyze potential category pairings.
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Multiple Joins:
- Retrieve sales order information, including customer names, product names, and order quantities, by joining the relevant tables.
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Join with Aggregate Functions:
- Find the total sales amount for each salesperson by joining the sales and salesperson tables.
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Join with Subquery:
- List products that have never been sold by using a subquery in conjunction with a join.
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Join with Conditional Logic:
- Retrieve a list of products along with their inventory status, indicating whether each product is in stock or out of stock.
These questions are designed to help you practice and understand different join operations within the AdventureWorks database.
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