Description: The logical operator ‘AND’ is fundamental in SQL queries, used to combine multiple conditions in a statement. This operator allows a query to return results only when all specified conditions are true. For example, in a query that searches for records in a database, if one wants to filter results to meet more than one criterion, the ‘AND’ operator is employed. Its use is essential for making searches more precise and specific, improving the quality of the retrieved data. In SQL, the ‘AND’ operator can be used in clauses such as WHERE, HAVING, and JOIN, allowing developers and data analysts to build complex queries that reflect multiple conditions. The combination of conditions using ‘AND’ is particularly useful in situations where strict criteria must be met, such as in data validation or in generating detailed reports. This operator is an integral part of Boolean logic, which is the foundation of many operations in programming and databases, and its correct implementation is crucial for the success of SQL queries.
