How to Export Data in PL/SQL

There are various ways to export data in PL/SQL, such as using cursors, stored procedures, queries, and tools. Here are some common methods for exporting data:

1. In PL/SQL, you can use a cursor to iterate through query results and save them to a file or display them on the screen. Cursors are manipulated using the OPEN, FETCH, and CLOSE statements.
2. By using a stored procedure, you can write a procedure that performs a query and saves the results to a table or file. Then you can export the data by calling this stored procedure.
3. Direct query: You can write a query statement in PL/SQL, save the results in a cursor variable. Then, you can use the FETCH_ROWS procedure in the DBMS_SQL package to retrieve the query results and save them to a file or output them to the screen.
4. Tools such as PL/SQL Developer, Toad, and SQL Developer can be used to export data from the database. These tools offer the functionality to export query results and save them in formats like CSV, Excel, XML, etc.

The above are several commonly used methods, the specific method to use depends on your needs and environment.