From 97aab860ac91242d9c474120b1e581a101b45162 Mon Sep 17 00:00:00 2001
From: Tim Diekmann <post@timdiekmann.de>
Date: Tue, 10 Dec 2024 11:45:43 +0100
Subject: [PATCH] Fix including data type children will not emit anything if no
 children exist

---
 .../src/store/postgres/ontology/entity_type.rs     | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/libs/@local/graph/postgres-store/src/store/postgres/ontology/entity_type.rs b/libs/@local/graph/postgres-store/src/store/postgres/ontology/entity_type.rs
index 8067d91be01..8bb03f7783a 100644
--- a/libs/@local/graph/postgres-store/src/store/postgres/ontology/entity_type.rs
+++ b/libs/@local/graph/postgres-store/src/store/postgres/ontology/entity_type.rs
@@ -217,12 +217,14 @@ where
 
         let query = if include_data_type_children {
             "
-                SELECT DISTINCT ON (ontology_id) schema, closed_schema
-                FROM data_type_inherits_from
-                JOIN data_types
-                  ON ontology_id = source_data_type_ontology_id
-                  OR ontology_id = target_data_type_ontology_id
-                WHERE target_data_type_ontology_id = ANY($1);
+                SELECT schema, closed_schema
+                FROM data_types
+                WHERE ontology_id = ANY($1)
+                    OR ontology_id IN (
+                        SELECT source_data_type_ontology_id
+                        FROM data_type_inherits_from
+                        WHERE target_data_type_ontology_id = ANY($1)
+                    );
             "
         } else {
             "