[GitHub] [incubator-superset] guoxin-li opened a new issue #12066: Unable to use Group by with multiple entries with TIME-SERIES TABLE

[GitBox <gi...@apache.org>]

guoxin-li opened a new issue #12066:
URL: https://github.com/apache/incubator-superset/issues/12066


   **Issue**
   This issue has been seen in superset 0.26, 0.35, and the latest version of 0.36. When queries with more than one entires of `Group by` for Time-Series Table, the following error is showing up :
    `Unexpected Error
    keys must be str, int, float, bool or None, not tuple`
    [](url)
    **How to reproduce this Error:**
    Use any available data source to create a TIME-SERIES TABLE, add more than one Group by entries and run query
     
     **Trace log**
     `Traceback (most recent call last):
   File "/opt/superset/venv/lib/python3.6/site-packages/superset/views/base.py", line 120, in wraps
   return f(self, *args, **kwargs)
   File "/opt/superset/venv/lib/python3.6/site-packages/superset/utils/decorators.py", line 69, in wrapper
   return f(*args, **kwargs)
   File "/opt/superset/venv/lib/python3.6/site-packages/superset/views/core.py", line 1092, in explore_json
   viz_obj, csv=csv, query=query, results=results, samples=samples
   File "/opt/superset/venv/lib/python3.6/site-packages/superset/views/core.py", line 1014, in generate_json
   return data_payload_response(*viz_obj.payload_json_and_has_error(payload))
   File "/opt/superset/venv/lib/python3.6/site-packages/superset/viz.py", line 478, in payload_json_and_has_error
   return self.json_dumps(payload), has_error
   File "/opt/superset/venv/lib/python3.6/site-packages/superset/viz.py", line 470, in json_dumps
   obj, default=utils.json_int_dttm_ser, ignore_nan=True, sort_keys=sort_keys
   File "/opt/superset/venv/lib64/python3.6/site-packages/simplejson/_init_.py", line 412, in dumps
   **kw).encode(obj)
   File "/opt/superset/venv/lib64/python3.6/site-packages/simplejson/encoder.py", line 296, in encode
   chunks = self.iterencode(o, _one_shot=True)
   File "/opt/superset/venv/lib64/python3.6/site-packages/simplejson/encoder.py", line 378, in iterencode
   return _iterencode(o, 0)
   TypeError: keys must be str, int, float, bool or None, not tuple
    `


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