Special-case schemas for temp tables with no columns.

lsst · Sep 9, 2024 · 379f45d · 379f45d
1 parent 3d5496d
commit 379f45d
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/python/lsst/daf/butler/direct_query_driver/_query_builder.py b/python/lsst/daf/butler/direct_query_driver/_query_builder.py
@@ -300,6 +300,8 @@ def make_table_spec(self) -> ddl.TableSpec:
                         )
                     )
                 )
+        if not results.fields:
+            results.fields.add(ddl.FieldSpec(name=self.EMPTY_COLUMNS_NAME, dtype=self.EMPTY_COLUMNS_TYPE))
         return results