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Fix no data in Presto (#8268)

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* Fix no data in Presto

* Fix test
This commit is contained in:
Beto Dealmeida
2019-09-20 14:31:13 +02:00
committed by GitHub
parent 731c19b630
commit 7090725de9
2 changed files with 24 additions and 1 deletions
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4
superset/dataframe.py
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@@ -106,11 +106,13 @@ class SupersetDataFrame(object):
self.column_names = column_names
if dtype:
# put data in a 2D array so we can efficiently access each column;
# the reshape ensures the shape is 2D in case data is empty
array = np.array(data, dtype="object").reshape(-1, len(column_names))
# convert each column in data into a Series of the proper dtype; we
# need to do this because we can not specify a mixed dtype when
# instantiating the DataFrame, and this allows us to have different
# dtypes for each column.
array = np.array(data, dtype="object")
data = {
column: pd.Series(array[:, i], dtype=dtype[column])
for i, column in enumerate(column_names)