Dynamic SQL refers to a technique in which the SQL statements are constructed dynamically at runtime, rather than being hardcoded in the application. This allows for more flexible and dynamic behavior of the application, as it can generate and execute different SQL statements based on input or conditions.
In Oracle, dynamic SQL can be achieved using the following methods:
- Using the EXECUTE IMMEDIATE statement: This statement allows you to execute dynamic SQL statements directly within PL/SQL. Here is an example:
- Using the DBMS_SQL package: This package provides a procedural interface for dynamic SQL in Oracle. It allows you to execute dynamic SQL statements, parse them, bind variables to them, and retrieve their results. Here is an example: