#455 fix improper quoting of on clause

ormar/queryset/join.py

@@ -108,7 +108,14 @@ class SqlJoin:
         :rtype: sqlalchemy.text
         """
         left_part = f"{self.next_alias}_{to_clause}"
-        right_part = f"{previous_alias + '_' if previous_alias else ''}{from_clause}"
+        if not previous_alias:
+            dialect = self.main_model.Meta.database._backend._dialect
+            table, column = from_clause.split(".")
+            quotter = dialect.identifier_preparer.quote
+            right_part = f"{quotter(table)}.{quotter(column)}"
+        else:
+            right_part = f"{previous_alias}'_'{from_clause}"
+
         return text(f"{left_part}={right_part}")
 
     def build_join(self) -> Tuple[List, sqlalchemy.sql.select, List, OrderedDict]:

ormar/queryset/queryset.py

@@ -913,7 +913,7 @@ class QuerySet(Generic[T]):
         except ormar.NoMatch:
             return None
 
-    async def get(self, *args: Any, **kwargs: Any) -> "T":
+    async def get(self, *args: Any, **kwargs: Any) -> "T":  # noqa: CCR001
         """
         Get's the first row from the db meeting the criteria set by kwargs.