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datalog: aggregates work as top-level query goals (183/183)
Bug: dl-match-lit (the naive matcher used by dl-find-bindings)
was missing dl-aggregate? dispatch — it was only present in
dl-fbs-aux (semi-naive). Symptom:
  (dl-query db '(count N X (p X)))
silently returned ().

Two fixes:
- Add aggregate branch to dl-match-lit before the positive case.
- dl-query-user-vars now projects only the result var (first arg)
  of an aggregate goal — the aggregated var and inner-goal vars
  are existentials and should not leak into substitutions.

2 new aggregate tests cover count and findall as direct query goals.
2026-05-08 09:45:15 +00:00

396 B

datalog scoreboard

183 / 183 passing (0 failure(s)).

Suite Passed Total Status
tokenize 26 26 ok
parse 18 18 ok
unify 28 28 ok
eval 25 25 ok
builtins 19 19 ok
semi_naive 8 8 ok
negation 10 10 ok
aggregates 18 18 ok
api 13 13 ok
demo 18 18 ok