Test Your MySQL Equal to Operator Knowledge with Our SQL Quiz

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True / False

In MySQL, the = (equal to) operator can be used to compare two strings.

True False

The = operator in MySQL can be used to compare two strings to check if they are identical.

True / False

The = operator in MySQL can only be used to compare numerical values.

True False

The = operator in MySQL can be used to compare both numerical values and strings.

True / False

In MySQL, the = operator is used to assign values to variables.

True False

In MySQL, the = operator is used for comparison, not for assignment. The assignment operator in MySQL is :=.

True / False

The = operator in MySQL is case-sensitive when comparing string values.

True False

By default, the = operator in MySQL is case-insensitive when comparing string values. To perform a case-sensitive comparison, the BINARY keyword can be used.

True / False

In MySQL, SELECT * FROM employees WHERE salary = 50000; will return rows where the salary is exactly 50000.

True False

The = operator in MySQL is used to find exact matches. This query will return rows where the salary column has the exact value of 50000.

True / False

The = operator can be used in MySQL to compare NULL values.

True False

In MySQL, the = operator cannot be used to compare NULL values. The IS NULL or IS NOT NULL operators should be used instead.

True / False

In MySQL, the query SELECT * FROM users WHERE username = 'admin' will return all rows where the username column has the exact value 'admin'.

True False

The = operator in MySQL checks for exact matches. This query will return rows where the username column exactly matches 'admin'.

True / False

In MySQL, using the = operator to compare a column with a subquery result that returns multiple rows will cause an error.

True False

The = operator in MySQL requires the subquery to return a single value. If the subquery returns multiple rows, it will cause an error.

True / False

The = operator in MySQL can be used in conjunction with the CASE statement to provide conditional logic.

True False

The = operator can be used within a CASE statement in MySQL to perform conditional checks and execute corresponding actions based on the results of those checks.

Q10

True / False

In MySQL, SELECT * FROM products WHERE price = (SELECT MAX(price) FROM products); will return the product with the highest price.

True False

This query uses the = operator to compare the price column with the maximum price obtained from a subquery. It returns the row where the price matches the maximum price from the products table.

Q11

Single Choice

What does the = operator do in MySQL?

It compares two values to see if they are greater than each other. It assigns a value to a variable It compares two values to see if they are equal.It combines two strings together.

In MySQL, the = operator is used to compare two values to determine if they are equal. If they are, the condition returns true.

Q12

Single Choice

Which SQL statement uses the = operator correctly to filter records?

SELECT * FROM employees WHERE salary = 50000; SELECT * FROM employees WHERE salary > 50000; SELECT * FROM employees WHERE salary < 50000;SELECT * FROM employees WHERE salary != 50000;

The correct syntax for using the = operator is shown in option a), where it filters the employees table to find records where the salary is exactly 50000

Q13

Single Choice

In which scenario would the = operator be used in a WHERE clause?

When you need to find all records with a non-null value. When you need to check if a column value matches a specific number. When you need to sort records by a column value.When you need to combine multiple conditions in a query.

The = operator is used to compare a column's value to a specific number or string in a WHERE clause.

Q14

Single Choice

Consider the products table with columns product_id, product_name, and price. Which query will return products priced at exactly 25?

SELECT * FROM products WHERE price < 25; SELECT * FROM products WHERE price != 25; SELECT * FROM products WHERE price = 25;SELECT * FROM products WHERE price >= 25;

The = operator is used here to match the exact price of 25 in the price column.

Q15

Single Choice

Which query correctly selects records where the status column equals 'active'?

SELECT * FROM users WHERE status == 'active'; SELECT * FROM users WHERE status = 'active' SELECT * FROM users WHERE status LIKE 'active'SELECT * FROM users WHERE status IN ('active');

The correct syntax for comparing string values in MySQL is by using the = operator as shown in option b).

Q16

Single Choice

If a table employees has a column department_id, which query would retrieve all employees in department 3?

SELECT * FROM employees WHERE department_id = 3; SELECT * FROM employees WHERE department_id = '3'; SELECT * FROM employees WHERE department_id > 3;SELECT * FROM employees WHERE department_id <> 3;

The = operator is used to compare numerical values like department_id to the value 3 to filter records.

Q17

Single Choice

Which query correctly checks for equality between two columns in the same table?

SELECT * FROM orders WHERE order_total = order_discount; SELECT * FROM orders WHERE order_total > order_discount; SELECT * FROM orders WHERE order_total >= order_discount;SELECT * FROM orders WHERE order_total != order_discount;

The = operator can be used to compare two columns directly in a WHERE clause to find rows where their values are equal.

Q18

Single Choice

Given a table inventory with columns item_id, item_name, and quantity, which query will correctly return items with a quantity of 0?

SELECT * FROM inventory WHERE quantity > 0; SELECT * FROM inventory WHERE quantity = 0; SELECT * FROM inventory WHERE quantity != 0;SELECT * FROM inventory WHERE quantity >= 0;

The = operator is used here to filter rows where quantity is exactly 0.

Q19

Single Choice

Which of the following statements uses the = operator correctly to join two tables on a matching column?

SELECT * FROM orders o JOIN customers c ON o.customer_id = c.customer_id; SELECT * FROM orders o JOIN customers c ON o.customer_id > c.customer_id; SELECT * FROM orders o JOIN customers c ON o.customer_id <= c.customer_id;SELECT * FROM orders o JOIN customers c ON o.customer_id != c.customer_id;

The = operator is used in the JOIN clause to match records from two tables based on equal values in the customer_id columns.

Q20

Single Choice

Given a table transactions with columns transaction_id, amount, and transaction_type, which query correctly retrieves records where the transaction_type is 'credit' and the amount equals 100?

SELECT * FROM transactions WHERE transaction_type = 'credit' AND amount = 100; SELECT * FROM transactions WHERE transaction_type LIKE 'credit' AND amount = 100; SELECT * FROM transactions WHERE transaction_type IN ('credit') AND amount > 100;SELECT * FROM transactions WHERE transaction_type = 'credit' OR amount = 100;

This query uses the = operator to filter records where both the transaction_type is 'credit' and the amount equals 100.

Q21

Multiple Choice

Which query correctly retrieves records from the 'employees' table where 'department_id' is equal to 3?

SQL Code

SELECT *
FROM employees
WHERE department_id = 3;

SELECT * FROM employees WHERE department_id = 3; SELECT * FROM employees WHERE department_id <> 3; SELECT * FROM employees WHERE department_id > 3;SELECT * FROM employees WHERE department_id < 3;

The '=' operator is used to filter rows where the 'department_id' column equals 3.

Q22

Multiple Choice

Identify the correct SQL query that retrieves records from the 'orders' table where 'order_status' is equal to 'Shipped'.

SQL Code

SELECT *
FROM orders
WHERE order_status = 'Shipped';

SELECT * FROM orders WHERE order_status = 'Shipped'; SELECT * FROM orders WHERE order_status != 'Shipped'; SELECT * FROM orders WHERE order_status = 'Pending';SELECT * FROM orders WHERE order_status IS 'Shipped';

The '=' operator filters rows where the 'order_status' column is equal to 'Shipped'.

Q23

Multiple Choice

Which query correctly selects records from the 'products' table where 'category_id' is equal to 10?

SQL Code

SELECT *
FROM products
WHERE category_id = 10;

SELECT * FROM products WHERE category_id = 10; SELECT * FROM products WHERE category_id <> 10; SELECT * FROM products WHERE category_id > 10;SELECT * FROM products WHERE category_id < 10;

The '=' operator is used to filter rows where the 'category_id' column is equal to 10.

Q24

Multiple Choice

Determine the correct SQL query that retrieves records from the 'customers' table where 'country' is equal to 'USA'.

SQL Code

SELECT *
FROM customers
WHERE country = 'USA';

SELECT * FROM customers WHERE country = 'USA'; SELECT * FROM customers WHERE country <> 'USA'; SELECT * FROM customers WHERE country = 'Canada';SELECT * FROM customers WHERE country IS 'USA';

The '=' operator filters rows where the 'country' column is equal to 'USA'.

Q25

Multiple Choice

Which SQL query retrieves records from the 'inventory' table where 'quantity' is equal to 100?

SQL Code

SELECT *
FROM inventory
WHERE quantity = 100;

SELECT * FROM inventory WHERE quantity = 100; SELECT * FROM inventory WHERE quantity <> 100; SELECT * FROM inventory WHERE quantity > 100;SELECT * FROM inventory WHERE quantity < 100;

The '=' operator is used to filter rows where the 'quantity' column is equal to 100.

Q26

Multiple Choice

Which query correctly retrieves records from the 'sales' table where 'total_sales' is equal to 5000?

SQL Code

SELECT *
FROM sales
WHERE total_sales = 5000;

SELECT * FROM sales WHERE total_sales = 5000; SELECT * FROM sales WHERE total_sales <> 5000; SELECT * FROM sales WHERE total_sales > 5000;SELECT * FROM sales WHERE total_sales < 5000;

The '=' operator filters rows where the 'total_sales' column is equal to 5000.

Q27

Multiple Choice

Determine the correct SQL query that selects records from the 'transactions' table where 'transaction_amount' is equal to 100.

SQL Code

SELECT *
FROM transactions
WHERE transaction_amount = 100;

SELECT * FROM transactions WHERE transaction_amount = 100; SELECT * FROM transactions WHERE transaction_amount <> 100; SELECT * FROM transactions WHERE transaction_amount > 100;SELECT * FROM transactions WHERE transaction_amount < 100;

The '=' operator is used to filter rows where 'transaction_amount' is equal to 100.

Q28

Multiple Choice

Which SQL query retrieves records from the 'projects' table where 'budget' is equal to 50000?

SQL Code

SELECT *
FROM projects
WHERE budget = 50000;

SELECT * FROM projects WHERE budget = 50000; SELECT * FROM projects WHERE budget <> 50000; SELECT * FROM projects WHERE budget > 50000;SELECT * FROM projects WHERE budget < 50000;

The '=' operator is used to filter rows where the 'budget' column is equal to 50000.

Q29

Multiple Choice

Identify the correct query that retrieves records from the 'clients' table where 'revenue' is equal to 200000.

SQL Code

SELECT *
FROM clients
WHERE revenue = 200000;

SELECT * FROM clients WHERE revenue = 200000; SELECT * FROM clients WHERE revenue <> 200000; SELECT * FROM clients WHERE revenue > 200000;SELECT * FROM clients WHERE revenue < 200000;

The '=' operator is used to filter rows where the 'revenue' column is equal to 200000.

Q30

Multiple Choice

Which SQL query correctly retrieves records from the 'students' table where 'marks' are equal to 85?

SQL Code

SELECT *
FROM students
WHERE marks = 85;

SELECT * FROM students WHERE marks = 85; SELECT * FROM students WHERE marks <> 85; SELECT * FROM students WHERE marks > 85;SELECT * FROM students WHERE marks < 85;

The '=' operator is used to filter rows where 'marks' are equal to 85.

MySQL Database Quiz Questions