sql where multiple conditions

Filtering data in a SQL database is a fundamental task. The WHERE clause is the primary tool for this. Often, you need to apply more than one condition to select the desired rows. This is where multiple conditions come into play. You can combine these conditions using logical operators like AND, OR, and NOT. Understanding how to use these operators correctly is essential for retrieving the right data from your database tables.Using AND combines conditions, meaning a row is selected only if *all* conditions are met. For example, you might want to find all customers who live in a specific city and have placed orders over a certain amount. The AND operator ensures both conditions are satisfied.OR allows you to select rows if *at least one* of the conditions is met. This is useful for finding customers who live in either of two cities, or who have placed orders over a certain amount or have a specific product in their order history.NOT negates a condition, selecting rows where the condition is false. This is useful for excluding specific data points. For example, you might want to find all customers who do not live in a particular city.It's important to understand the order of operations. SQL follows standard Boolean logic precedence, with parentheses used to group conditions for clarity and control the order of evaluation. This is crucial for complex queries, ensuring the correct conditions are evaluated in the intended sequence.Proper use of multiple conditions in the WHERE clause is essential for retrieving the exact data you need from a database. This is a fundamental skill for any SQL developer.