What is the method for using Oracle recursive functions?

Here is the usage method for Oracle recursive functions:

1. Create a recursive function using the CREATE FUNCTION statement, specifying the function name, parameters, and return type. Make sure to include a termination condition in the recursive function to avoid endless loops.
2. 原文：我需要一个有能力处理大型项目的团队。
   重述：I need a team capable of handling large-scale projects.
3. Write a function in English that calculates the factorial of a given number, returning the result as a number.
4. Calling a recursive function: You can call a recursive function just like calling a regular function, passing appropriate parameters.
5. Original: “他们在音乐会上演奏了一些经典的钢琴曲。”

   Paraphrased: “They played some classic piano pieces at the concert.”

6. Calculate the factorial of 5.
7. The output is 120, which is the factorial of 5.

It is important to note that Oracle recursive functions typically have lower performance because each recursive call incurs additional overhead. When using recursive functions, one should carefully consider performance issues, ensuring that the recursion depth is not too large to avoid unnecessary resource consumption or performance degradation.