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[SPARK-28439][PYTHON][SQL] Add support for count: Column in array_repeat #25193

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[SPARK-28439][PYTHON][SQL] Add support for count: Column in array_repeat #25193

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4e28f29
Add support for count: Column in array_repeat
zero323 Jul 18, 2019
6fedb9d
Test if both column and integer count are supported
zero323 Jul 18, 2019
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5 changes: 4 additions & 1 deletion python/pyspark/sql/functions.py
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Original file line number Diff line number Diff line change
Expand Up @@ -2698,7 +2698,10 @@ def array_repeat(col, count):
[Row(r=[u'ab', u'ab', u'ab'])]
"""
sc = SparkContext._active_spark_context
return Column(sc._jvm.functions.array_repeat(_to_java_column(col), count))
return Column(sc._jvm.functions.array_repeat(
_to_java_column(col),
_to_java_column(count) if isinstance(count, Column) else count
))


@since(2.4)
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10 changes: 10 additions & 0 deletions python/pyspark/sql/tests/test_functions.py
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Expand Up @@ -294,6 +294,16 @@ def test_input_file_name_reset_for_rdd(self):
for result in results:
self.assertEqual(result[0], '')

def test_array_repeat(self):
from pyspark.sql.functions import array_repeat, lit

df = self.spark.range(1)

self.assertEquals(
df.select(array_repeat("id", 3)).toDF("val").collect(),
df.select(array_repeat("id", lit(3))).toDF("val").collect(),
)


if __name__ == "__main__":
import unittest
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