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[error handling] 'Time Comparison' query returns no data #4380

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Feb 12, 2018
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9 changes: 5 additions & 4 deletions superset/viz.py
Original file line number Diff line number Diff line change
Expand Up @@ -1127,10 +1127,11 @@ def run_extra_queries(self):
query_object['to_dttm'] -= delta

df2 = self.get_df_payload(query_object).get('df')
df2[DTTM_ALIAS] += delta
df2 = self.process_data(df2)
self.extra_chart_data = self.to_series(
df2, classed='superset', title_suffix='---')
if df2 is not None:
df2[DTTM_ALIAS] += delta
df2 = self.process_data(df2)
self.extra_chart_data = self.to_series(
df2, classed='superset', title_suffix='---')

def get_data(self, df):
df = self.process_data(df)
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