Oh, maybe I should explain the fields some more.
In Drupal(553_w3drpfilter.url_alias)
src:’node/9′
dst:’9/stier-vs-mathador’
SUBSTRING(dst, POSITION(‘/’ IN dst)+1) AS Slug
gives me ‘stier-vs-mathador’
SUBSTRING(dst FROM 1 FOR POSITION(‘/’ IN dst)-1)
gives me ‘9’