Problem Statement

A+B   ─── a classic problem in programming contests,   it's given so contestants can gain familiarity with the online judging system being used.

Given two integers,   A and B. Their sum needs to be calculated.

Two integers are written in the input stream, separated by space(s):

The required output is one integer:   the sum of A and B.

Let's start with the solution:

CREATE OR REPLACE FUNCTION splitadd (instring VARCHAR(255))
	RETURNS INTEGER
	NO EXTERNAL ACTION
F1: BEGIN ATOMIC

	declare first INTEGER;
	declare second INTEGER;
	
	set first = REGEXP_SUBSTR(instring, '[0-9]+',1,1);
	set second = REGEXP_SUBSTR(instring, '[0-9]+',1,2);

	return first + second;
END