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datalog: group-by-via-aggregate-in-rule test (216/216)
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giles
2026-05-08 10:22:03 +00:00
parent 7a64be22d8
commit de734b27b8
3 changed files with 22 additions and 6 deletions
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8
lib/datalog/scoreboard.json
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@@ -1,8 +1,8 @@
{ {
"lang": "datalog", "lang": "datalog",
"total_passed": 215, "total_passed": 216,
"total_failed": 0, "total_failed": 0,
"total": 215, "total": 216,
"suites": [ "suites": [
{"name":"tokenize","passed":26,"failed":0,"total":26}, {"name":"tokenize","passed":26,"failed":0,"total":26},
{"name":"parse","passed":18,"failed":0,"total":18}, {"name":"parse","passed":18,"failed":0,"total":18},
@@ -11,10 +11,10 @@
{"name":"builtins","passed":19,"failed":0,"total":19}, {"name":"builtins","passed":19,"failed":0,"total":19},
{"name":"semi_naive","passed":8,"failed":0,"total":8}, {"name":"semi_naive","passed":8,"failed":0,"total":8},
{"name":"negation","passed":10,"failed":0,"total":10}, {"name":"negation","passed":10,"failed":0,"total":10},
{"name":"aggregates","passed":18,"failed":0,"total":18}, {"name":"aggregates","passed":19,"failed":0,"total":19},
{"name":"api","passed":20,"failed":0,"total":20}, {"name":"api","passed":20,"failed":0,"total":20},
{"name":"magic","passed":22,"failed":0,"total":22}, {"name":"magic","passed":22,"failed":0,"total":22},
{"name":"demo","passed":18,"failed":0,"total":18} {"name":"demo","passed":18,"failed":0,"total":18}
], ],
"generated": "2026-05-08T10:19:48+00:00" "generated": "2026-05-08T10:21:54+00:00"
} }

4
lib/datalog/scoreboard.md
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@@ -1,6 +1,6 @@
# datalog scoreboard # datalog scoreboard
**215 / 215 passing** (0 failure(s)). **216 / 216 passing** (0 failure(s)).
| Suite | Passed | Total | Status | | Suite | Passed | Total | Status |
|-------|--------|-------|--------| |-------|--------|-------|--------|
@@ -11,7 +11,7 @@
| builtins | 19 | 19 | ok | | builtins | 19 | 19 | ok |
| semi_naive | 8 | 8 | ok | | semi_naive | 8 | 8 | ok |
| negation | 10 | 10 | ok | | negation | 10 | 10 | ok |
| aggregates | 18 | 18 | ok | | aggregates | 19 | 19 | ok |
| api | 20 | 20 | ok | | api | 20 | 20 | ok |
| magic | 22 | 22 | ok | | magic | 22 | 22 | ok |
| demo | 18 | 18 | ok | | demo | 18 | 18 | ok |

16
lib/datalog/tests/aggregates.sx
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@@ -227,6 +227,22 @@
(list {:L (list)})) (list {:L (list)}))
;; Aggregate vs single distinct. ;; Aggregate vs single distinct.
;; Group-by via aggregate-in-rule-body. Per-user friend count
;; over a friends relation. The U var is bound by the prior
;; positive lit u(U) so the aggregate counts only U-rooted
;; friends per group.
(dl-at-test-set! "group-by per-user friend count"
(dl-query
(dl-program
"u(alice). u(bob). u(carol).
f(alice, x). f(alice, y). f(bob, x).
counts(U, N) :- u(U), count(N, X, f(U, X)).")
(list (quote counts) (quote U) (quote N)))
(list
{:U (quote alice) :N 2}
{:U (quote bob) :N 1}
{:U (quote carol) :N 0}))
;; Stratification: recursion through aggregation is rejected. ;; Stratification: recursion through aggregation is rejected.
(dl-at-test! "agg recursion rejected" (dl-at-test! "agg recursion rejected"
(dl-at-throws? (dl-at-throws?