How date conversion works in SQL is crucial for tasks like timestamping entries, managing current events, keeping historical records, and tracking events. Understanding the basics of SQL date conversion is essential to effectively manipulate and convert dates with SQL Server's built-in functions. The post explores various methods for date conversion using CAST, CONVERT, DATE_FORMAT, and FORMAT functions, along with practical examples and best practices to avoid common mistakes like incorrect date formats or invalid non-existent dates. By following these guidelines and utilizing the appropriate SQL functions, developers can efficiently handle date conversion in their SQL databases, ensuring data accuracy and query performance.