fix when fetch_format='frame'

Author: neuralsignal

datajoint/fetch.py

@@ -173,7 +173,9 @@ def __call__(self, *attrs, offset=None, limit=None, order_by=None, format=None,
             attributes = [a for a in attrs if not is_key(a)]
             ret = self._expression.proj(*attributes).fetch(
                 offset=offset, limit=limit, order_by=order_by,
-                as_dict=False, squeeze=squeeze, download_path=download_path)
+                as_dict=False, squeeze=squeeze, download_path=download_path,
+                format='array'
+            )
             if attrs_as_dict:
                 ret = [{k: v for k, v in zip(ret.dtype.names, x) if k in attrs} for x in ret]
             else: