Recursive stored functions in MySQL

Question

I\'m trying to make a function that recursively builds a path for a specific category

CREATE FUNCTION getPath(inId INT)
RETURNS TEXT
DETERMINISTIC
BEGIN
             


        

Answer 1

MySQL does not allow recursive FUNCTIONs, even if you set max_sp_recursion_depth.

It does allow up to 255 recursion in a PROCEDURE if you set max_sp_recursion_depth.

So I recommend that you replace your function with a procedure, using an INOUT variable for the return_path.