W3. SQL Any, All

Question 1

Q: What do the SQL ANY and ALL operators do?

Answer 1

A: They allow comparisons between a single column value and a range of other values.

Question 2

Q: What does the ANY operator do in SQL?

Answer 2

A: It returns TRUE if any of the values in the subquery meet the specified condition.

Question 3

Q: What is the syntax for using ANY with a comparison operator?

Answer 3

SELECT column_name(s)
FROM table_name
WHERE column_name operator ANY
(SELECT column_name FROM table_name WHERE condition);

Question 4

Q: What does the ALL operator do in SQL?

Answer 4

A: It returns TRUE only if all the values in the subquery meet the specified condition.

Question 5

Q: Write the syntax for using ALL with a comparison operator in WHERE or HAVING.

Answer 5

SELECT column_name(s)
FROM table_name
WHERE column_name operator ALL
(SELECT column_name FROM table_name WHERE condition);

Question 6

Q: Write a query to list ProductName if any records in OrderDetails have Quantity equal to 10.

Answer 6

SELECT ProductName
FROM Products
WHERE ProductID = ANY
(SELECT ProductID FROM OrderDetails WHERE Quantity = 10);

Question 7

Q: Write a query to list ProductName if any records in OrderDetails have Quantity greater than 99.

Answer 7

SELECT ProductName
FROM Products
WHERE ProductID = ANY
(SELECT ProductID FROM OrderDetails WHERE Quantity > 99);

Question 8

Q: What will happen if ANY finds no records that meet the condition in the subquery?

Answer 8

A: It will return FALSE, as none of the values meet the condition.

Question 9

Q: Write a query to list ProductName if all records in OrderDetails have Quantity equal to 10.

Answer 9

SELECT ProductName
FROM Products
WHERE ProductID = ALL
(SELECT ProductID FROM OrderDetails WHERE Quantity = 10);