Dynamic SQL allows SQL queries to be constructed and executed at runtime, enhancing flexibility.
What is Dynamic SQL?
Queries are built as strings, allowing modifications based on user input or application logic.
How It Works
In SQL Server, dynamic SQL can be executed using EXEC or sp_executesql.
Execution Methods
It enables adaptable queries, runtime schema changes, and improved code reusability.
Benefits of Dynamic SQL
Dynamic SQL is useful for generating reports, filtering data, and handling variable table names.
Common Use Cases
Improper use can lead to SQL injection attacks; always validate user inputs.
Security Considerations
While flexible, dynamic SQL may have slower performance compared to static SQL due to execution overhead.
Performance Implications