MySQL AND operator

In MySQL, the AND operator is a logical operator used to combine multiple conditions in a query’s WHERE clause. It allows you to retrieve rows from a table that satisfy all specified conditions.

The syntax for using the AND operator in a MySQL query is as follows:

SELECT column1, column2, ...
FROM table_name
WHERE condition1 AND condition2 AND ... AND conditionN;

Here, condition1, condition2, condition3, and so on, represent the individual conditions that need to be met for a row to be included in the result set. You can use various comparison operators (e.g., =, >, <, <>) and logical operators (e.g., AND, OR, NOT) to construct these conditions.

Let’s consider an example to illustrate the usage of the AND operator. Suppose we have a table named employees with columns employee_id, first_name, last_name, and salary. We want to retrieve all employees who have a salary greater than 5000 and are from the ‘Sales’ department. We can write the following query:

SELECT employee_id, first_name, last_name, salary
FROM employees
WHERE salary > 5000 AND department = 'Sales';

In this query, the AND operator combines two conditions:

salary > 5000: This condition checks if the employee’s salary is greater than 5000.
department = 'Sales': This condition checks if the employee belongs to the ‘Sales’ department.

Both conditions must evaluate to true for a row to be included in the result set.

The AND operator can be used to combine any number of conditions. You can include as many conditions as required to filter the rows based on your specific criteria.

It’s worth noting that the AND operator has higher precedence than the OR operator in MySQL. Therefore, if you use both operators in a single WHERE clause, it’s important to use parentheses to group the conditions properly if you want to control the order of evaluation.

In summary, the AND operator in MySQL is used to combine multiple conditions in a query’s WHERE clause. It allows you to retrieve rows that satisfy all specified conditions simultaneously.