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datalevin
hrtmt brng 2025-07-17T15:16:52.867339Z
Do I make something wrong here? First ask for all attributes. The attribute :test/code-file is in that list. And then I ask for those entities, that have this attribute, and the result is empty.
((d/q '[:find ?attr
:where
[?x :type ut-table/test]
[?x ?attr]]
(d/db conn))
[:test/code-file])
=> [:test/code-file]
(d/q '[:find ?x
:where
[?x :type ut-table/test]
[?x :test/code-file]]
(d/db conn))
=> #{}hrtmt brng 2025-07-17T16:21:00.538559Z
I found out, that the problem has something to do with my schema. I think, I will be able to isolate the problem. Maybe it is just a stupid mistake, I am making. For some reason, this first query returns something even if ut-table/test is undefined.
hrtmt brng 2025-07-17T16:42:51.531569Z
To me it looks like a bug.
(def conn (d/get-conn "test/test_db"
{:my-type {:db/valueType :db.type/keyword}}))
(d/transact conn [{:my-type :ddd/test}])
(d/q '[:find ?x
:where
[?x :my-type ddd/test]]
(d/db conn))
=> #{[1]} ; should not work at all, or be empty, because I passed ddd/test instead of :ddd/test.(d/q '[:find ?x
:where
[?x :my-type :ddd/test]
[?x :my-type ddd/test]]
(d/db conn))
=> #{}
Huahai 2025-07-17T17:44:49.167729Z
the last query should not work, as it is saying the entity attribute having two different values.
hrtmt brng 2025-07-17T18:40:59.465749Z
Yes. But when you swap the two where clauses, then the last query works.
Huahai 2025-07-17T18:42:00.436699Z
interesting