https://www.hackerrank.com/challenges/symmetric-pairs/forum Discussion on Symmetric Pairs Challenge Write a query to output all symmetric pairs in ascending order by the value of X. www.hackerrank.com You are given a table, Functions, containing two columns: X and Y. Two pairs (X1, Y1) and (X2, Y2) are said to be symmetric pairs if X1 = Y2 and X2 = Y1. Write a query to output all such symmetric ..
