fix: null filtering on embed when column=relation

test/spec/Feature/Query/RelatedQueriesSpec.hs

@@ -233,18 +233,6 @@ spec = describe "related queries" $ do
         , matchHeaders = [matchContentTypeJson]
         }
 
-    it "only works with is null or is not null operators" $
-      get "/projects?select=name,clients(*)&clients=eq.3" `shouldRespondWith`
-        [json|{
-          "code":"PGRST120",
-          "details":"Only is null or not is null filters are allowed on embedded resources",
-          "hint":null,
-          "message":"Bad operator on the 'clients' embedded resource"
-        }|]
-        { matchStatus  = 400
-        , matchHeaders = [matchContentTypeJson]
-        }
-
     it "doesn't interfere filtering when embedding using the column name" $
       get "/projects?select=name,client_id,client:client_id(name)&client_id=eq.2" `shouldRespondWith`
         [json|[
@@ -254,3 +242,17 @@ spec = describe "related queries" $ do
         { matchStatus  = 200
         , matchHeaders = [matchContentTypeJson]
         }
+
+    it "doesn't interfere filtering on column names used for disambiguation" $
+      get "/user_friend?select=*,user1(*)&user1=eq.a02fb934-3a4d-469b-a6b6-4fcd88b973cf" `shouldRespondWith`
+        [json|[]|]
+        { matchStatus  = 200
+        , matchHeaders = [matchContentTypeJson]
+        }
+
+    it "doesn't interfere filtering on column names that are the same as the relation name" $
+      get "/tournaments?select=*,status(*)&status=eq.3" `shouldRespondWith`
+        [json|[]|]
+        { matchStatus  = 200
+        , matchHeaders = [matchContentTypeJson]
+        }

test/spec/fixtures/schema.sql

@@ -3308,3 +3308,24 @@ CREATE TABLE bitchar_with_length (
   bit bit(5),
   char char(5)
 );
+
+--- https://github.com/PostgREST/postgrest/issues/2862
+create table profiles (
+  id uuid primary key,
+  username text null
+);
+
+create table user_friend (
+  id bigint primary key,
+  user1 uuid references profiles (id),
+  user2 uuid references profiles (id)
+);
+
+create table status(
+  id bigint primary key
+);
+
+create table tournaments(
+  id bigint primary key,
+  status bigint references status(id)
+);