MySQL是一款功能強大的關系型數據庫管理系統，它支持許多條件查詢，使我們能夠更有效地處理和篩選數據。下面介紹幾種常見的條件查詢：

1. WHERE子句查詢：
SELECT * FROM table_name WHERE condition;
例子：
SELECT * FROM employee WHERE age >25 AND department = 'IT';
2. IN運算符查詢：
SELECT * FROM table_name WHERE column_name IN (value1, value2, ...);
例子：
SELECT * FROM employee WHERE department IN ('IT', 'HR', 'Finance');
3. LIKE運算符查詢：
SELECT * FROM table_name WHERE column_name LIKE pattern;
例子：
SELECT * FROM student WHERE name LIKE 'L%';
4. BETWEEN運算符查詢：
SELECT * FROM table_name WHERE column_name BETWEEN value1 AND value2;
例子：
SELECT * FROM product WHERE price BETWEEN 50 AND 100;
5. IS NULL或IS NOT NULL查詢：
SELECT * FROM table_name WHERE column_name IS NULL;
SELECT * FROM table_name WHERE column_name IS NOT NULL;
例子：
SELECT * FROM student WHERE phone_number IS NULL;
6. AND和OR邏輯操作符查詢：
SELECT * FROM table_name WHERE condition1 AND condition2;
SELECT * FROM table_name WHERE condition1 OR condition2;
例子：
SELECT * FROM employee WHERE age >25 OR department = 'IT';

以上是MySQL中的許多條件查詢，通過靈活應用這些條件查詢，我們可以更加準確地獲取所需數據。