<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Suggest a SQL query to retrieve the employee records with an age greater than 30.
<|im_end|>
<|im_start|>assistant
SELECT * FROM employees WHERE age > 30;<|im_end|>
