Split a string into rows using pure SQLite

Question

Using SQLite, I\'d like to split a string in the following way.

Input string:

C:\\Users\\fidel\\Desktop\\Temp

and have

Answer 1

This is possible with a recursive common table expression:

WITH RECURSIVE split(s, last, rest) AS (
  VALUES('', '', 'C:\Users\fidel\Desktop\Temp')
  UNION ALL
  SELECT s || substr(rest, 1, 1),
         substr(rest, 1, 1),
         substr(rest, 2)
  FROM split
  WHERE rest <> ''
)
SELECT s
FROM split
WHERE rest = ''
   OR last = '\';

^{(You did not ask for a reasonable way.)}