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https://issues.apache.org/jira/browse/SPARK-41905?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17655222#comment-17655222
]
Apache Spark commented on SPARK-41905:
--------------------------------------
User 'HyukjinKwon' has created a pull request for this issue:
https://github.com/apache/spark/pull/39420
> Function `slice` should handle string in params
> -----------------------------------------------
>
> Key: SPARK-41905
> URL: https://issues.apache.org/jira/browse/SPARK-41905
> Project: Spark
> Issue Type: Sub-task
> Components: Connect
> Affects Versions: 3.4.0
> Reporter: Sandeep Singh
> Priority: Major
>
> {code:java}
> df = self.spark.createDataFrame(
> [
> (
> [1, 2, 3],
> 2,
> 2,
> ),
> (
> [4, 5],
> 2,
> 2,
> ),
> ],
> ["x", "index", "len"],
> )
> expected = [Row(sliced=[2, 3]), Row(sliced=[5])]
> self.assertTrue(
> all(
> [
> df.select(slice(df.x, 2, 2).alias("sliced")).collect() ==
> expected,
> df.select(slice(df.x, lit(2), lit(2)).alias("sliced")).collect()
> == expected,
> df.select(slice("x", "index", "len").alias("sliced")).collect()
> == expected,
> ]
> )
> )
> self.assertEqual(
> df.select(slice(df.x, size(df.x) - 1, lit(1)).alias("sliced")).collect(),
> [Row(sliced=[2]), Row(sliced=[4])],
> )
> self.assertEqual(
> df.select(slice(df.x, lit(1), size(df.x) - 1).alias("sliced")).collect(),
> [Row(sliced=[1, 2]), Row(sliced=[4])],
> ){code}
> {code:java}
> Traceback (most recent call last):
> File
> "/Users/s.singh/personal/spark-oss/python/pyspark/sql/tests/test_functions.py",
> line 596, in test_slice
> df.select(slice("x", "index", "len").alias("sliced")).collect() ==
> expected,
> File "/Users/s.singh/personal/spark-oss/python/pyspark/sql/utils.py", line
> 332, in wrapped
> return getattr(functions, f.__name__)(*args, **kwargs)
> File
> "/Users/s.singh/personal/spark-oss/python/pyspark/sql/connect/functions.py",
> line 1525, in slice
> raise TypeError(f"start should be a Column or int, but got
> {type(start).__name__}")
> TypeError: start should be a Column or int, but got str{code}
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