Sandeep Singh created SPARK-41904:
-------------------------------------
Summary: Fix `nth_value` functions output
Key: SPARK-41904
URL: https://issues.apache.org/jira/browse/SPARK-41904
Project: Spark
Issue Type: Sub-task
Components: Connect
Affects Versions: 3.4.0
Reporter: Sandeep Singh
{code:java}
from pyspark.sql.functions import flatten, struct, transform
df = self.spark.sql("SELECT array(1, 2, 3) as numbers, array('a', 'b', 'c') as
letters")
actual = df.select(
flatten(
transform(
"numbers",
lambda number: transform(
"letters", lambda letter: struct(number.alias("n"),
letter.alias("l"))
),
)
)
).first()[0]
expected = [
(1, "a"),
(1, "b"),
(1, "c"),
(2, "a"),
(2, "b"),
(2, "c"),
(3, "a"),
(3, "b"),
(3, "c"),
]
self.assertEquals(actual, expected){code}
{code:java}
Traceback (most recent call last):
File
"/Users/s.singh/personal/spark-oss/python/pyspark/sql/tests/test_functions.py",
line 809, in test_nested_higher_order_function
self.assertEquals(actual, expected)
AssertionError: Lists differ: [{'n': 'a', 'l': 'a'}, {'n': 'b', 'l': 'b'[151
chars]'c'}] != [(1, 'a'), (1, 'b'), (1, 'c'), (2, 'a'), ([43 chars]'c')]
First differing element 0:
{'n': 'a', 'l': 'a'}
(1, 'a')
- [{'l': 'a', 'n': 'a'},
- {'l': 'b', 'n': 'b'},
- {'l': 'c', 'n': 'c'},
- {'l': 'a', 'n': 'a'},
- {'l': 'b', 'n': 'b'},
- {'l': 'c', 'n': 'c'},
- {'l': 'a', 'n': 'a'},
- {'l': 'b', 'n': 'b'},
- {'l': 'c', 'n': 'c'}]
+ [(1, 'a'),
+ (1, 'b'),
+ (1, 'c'),
+ (2, 'a'),
+ (2, 'b'),
+ (2, 'c'),
+ (3, 'a'),
+ (3, 'b'),
+ (3, 'c')]
{code}
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