Explain the difference between static SQL and dynamic SQL in Pro*C.

Understanding the Difference between Static SQL and Dynamic SQL in Pro*C

When working with Pro*C, it's important to grasp the distinction between static SQL and dynamic SQL. The primary difference lies in how the queries are handled and executed.

Static SQL

In static SQL, the SQL queries are written and compiled at the time of code compilation. The query structure remains fixed and cannot be altered during runtime. This can lead to better performance and security since the query plan is determined in advance.

Dynamic SQL

Dynamic SQL, on the other hand, allows for the creation and execution of SQL queries during runtime. The query structure can be customized based on variables or user input, providing flexibility but potentially compromising performance and security due to the need for dynamic optimization.

When choosing between static SQL and dynamic SQL in Pro*C, consider the specific requirements of your application. Static SQL is ideal for predictable and frequently executed queries, while dynamic SQL is better suited for dynamic and customizable queries.

By understanding the nuances between static and dynamic SQL in Pro*C, you can make informed decisions to optimize performance and security in your database operations.