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Consider the following SQL query:
SELECT supplier_id
FROM suppliers
WHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);
FROM suppliers
WHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);
What does this query return?
- a)All supplier IDs whose products have a price greater than 100
- b)All supplier IDs whose products have a price less than 100
- c)All supplier IDs whose products have a price equal to 100
- d)An error will occur
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE...
The query selects the supplier IDs from the suppliers table where the supplier ID is present in the supplier ID column of the products table with a price greater than 100.
Most Upvoted Answer
Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE...
Understanding the SQL Query
The SQL query in question is designed to retrieve specific supplier IDs based on the prices of their products.
Query Breakdown
- Outer Query:
The outer query selects `supplier_id` from the `suppliers` table where the `supplier_id` is equal to all values returned by the inner query.
- Inner Query:
The inner query selects `supplier_id` from the `products` table where the `price` is greater than 100.
Logical Explanation
- The inner query retrieves the `supplier_id`s of all products that have a price exceeding 100.
- The outer query checks if a `supplier_id` from the `suppliers` table is equal to every `supplier_id` returned by the inner query.
What Does ALL Mean?
- The use of `= ALL` means that the query will only return supplier IDs that are not included in the inner query's result set.
- Hence, if a supplier has no products priced above 100, their ID will be returned.
Conclusion
- Therefore, the correct interpretation of the query is to find supplier IDs who do not have any products with prices above 100.
- The answer option 'A' states it returns all supplier IDs whose products have a price greater than 100, which is incorrect.
- The correct interpretation aligns more closely with option 'B', where it implies suppliers whose products are below or equal to 100.
In summary, the query is designed to filter out suppliers based on their product pricing, clarifying the importance of understanding SQL conditions effectively.
The SQL query in question is designed to retrieve specific supplier IDs based on the prices of their products.
Query Breakdown
- Outer Query:
The outer query selects `supplier_id` from the `suppliers` table where the `supplier_id` is equal to all values returned by the inner query.
- Inner Query:
The inner query selects `supplier_id` from the `products` table where the `price` is greater than 100.
Logical Explanation
- The inner query retrieves the `supplier_id`s of all products that have a price exceeding 100.
- The outer query checks if a `supplier_id` from the `suppliers` table is equal to every `supplier_id` returned by the inner query.
What Does ALL Mean?
- The use of `= ALL` means that the query will only return supplier IDs that are not included in the inner query's result set.
- Hence, if a supplier has no products priced above 100, their ID will be returned.
Conclusion
- Therefore, the correct interpretation of the query is to find supplier IDs who do not have any products with prices above 100.
- The answer option 'A' states it returns all supplier IDs whose products have a price greater than 100, which is incorrect.
- The correct interpretation aligns more closely with option 'B', where it implies suppliers whose products are below or equal to 100.
In summary, the query is designed to filter out suppliers based on their product pricing, clarifying the importance of understanding SQL conditions effectively.
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Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);What does this query return?a)All supplier IDs whose products have a price greater than 100b)All supplier IDs whose products have a price less than 100c)All supplier IDs whose products have a price equal to 100d)An error will occurCorrect answer is option 'A'. Can you explain this answer?
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Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);What does this query return?a)All supplier IDs whose products have a price greater than 100b)All supplier IDs whose products have a price less than 100c)All supplier IDs whose products have a price equal to 100d)An error will occurCorrect answer is option 'A'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);What does this query return?a)All supplier IDs whose products have a price greater than 100b)All supplier IDs whose products have a price less than 100c)All supplier IDs whose products have a price equal to 100d)An error will occurCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);What does this query return?a)All supplier IDs whose products have a price greater than 100b)All supplier IDs whose products have a price less than 100c)All supplier IDs whose products have a price equal to 100d)An error will occurCorrect answer is option 'A'. Can you explain this answer?.
Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);What does this query return?a)All supplier IDs whose products have a price greater than 100b)All supplier IDs whose products have a price less than 100c)All supplier IDs whose products have a price equal to 100d)An error will occurCorrect answer is option 'A'. Can you explain this answer? for Software Development 2025 is part of Software Development preparation. The Question and answers have been prepared according to the Software Development exam syllabus. Information about Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);What does this query return?a)All supplier IDs whose products have a price greater than 100b)All supplier IDs whose products have a price less than 100c)All supplier IDs whose products have a price equal to 100d)An error will occurCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Software Development 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider the following SQL query:SELECT supplier_idFROM suppliersWHERE supplier_id = ALL (SELECT supplier_id FROM products WHERE price > 100);What does this query return?a)All supplier IDs whose products have a price greater than 100b)All supplier IDs whose products have a price less than 100c)All supplier IDs whose products have a price equal to 100d)An error will occurCorrect answer is option 'A'. Can you explain this answer?.
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