Fix native query contents not being used in query-hash

src/metabase/query_processor/util.clj

@@ -40,7 +40,7 @@
    (This is done so irrelevant info or options that don't affect query results doesn't result in the same query producing different hashes.)"
   [query]
   {:pre [(map? query)]}
-  (let [{:keys [constraints parameters], :as query} (select-keys query [:database :type :query :parameters :constraints])]
+  (let [{:keys [constraints parameters], :as query} (select-keys query [:database :type :query :native :parameters :constraints])]
     (cond-> query
       (empty? constraints) (dissoc :constraints)
       (empty? parameters)  (dissoc :parameters))))

test/metabase/query_processor/util_test.clj

@@ -94,3 +94,14 @@
     (qputil/query-hash {:query :abc})
     (qputil/query-hash {:query :abc, :constraints nil})
     (qputil/query-hash {:query :abc, :constraints {}})))
+
+;; make sure two different natiev queries have different hashes!
+(expect
+  false
+  (array=
+    (qputil/query-hash {:database    2
+                        :type        "native"
+                        :native      {:query "SELECT pg_sleep(15), 1 AS one"}})
+    (qputil/query-hash {:database    2
+                        :type        "native"
+                        :native      {:query "SELECT pg_sleep(15), 2 AS two"}})))