(local Sqlog (require :waltz.sqlog))
(import-macros {: $ : query : insert : delete : update : defrules} :waltz.macros)

(local s (Sqlog))
(s:deftable :parent :parent :child)
(s:deftable :p :x :y)
(s:deftable :q :z)
(defrules s
  ([generation name (|| name " jr") 2] [parent name (|| name " jr")])
  ([generation name (|| name " iii") 3] [ancestor name (|| name " iii")])
  ([ancestor x y 1] [parent x y])
  ([ancestor x y (+ gen 1)] [parent x z] [ancestor z y gen]))
(pp (update s [p _ (+ y 1)] [p x y] [q x]))