What are the potential performance implications of using multiple comparison operators (e.g., >=, <=) in MySQL queries, and how can they be optimized for efficiency?

Using multiple comparison operators in MySQL queries can lead to decreased performance due to the increased complexity of the query. To optimize for efficiency, it is recommended to use indexes on the columns being compared and to minimize the number of comparisons being made in the query.

// Example of optimizing a MySQL query with multiple comparison operators
// Assuming we have a table named 'users' with columns 'age' and 'salary' that we want to query

// Create indexes on the columns being compared
CREATE INDEX idx_age ON users (age);
CREATE INDEX idx_salary ON users (salary);

// Optimize the query by minimizing the number of comparisons
SELECT * FROM users WHERE age >= 30 AND salary <= 50000;