cloud-fan commented on code in PR #37407:
URL: https://github.com/apache/spark/pull/37407#discussion_r972808194
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python/pyspark/sql/dataframe.py:
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@@ -3091,12 +3098,12 @@ def unpivot(
Parameters
----------
- ids : str, Column, tuple, list, optional
+ ids : str, Column, tuple, list
Column(s) to use as identifiers. Can be a single column or column
name,
or a list or tuple for multiple columns.
values : str, Column, tuple, list, optional
Column(s) to unpivot. Can be a single column or column name, or a
list or tuple
- for multiple columns. If not specified or empty, uses all columns
that
+ for multiple columns. Must not be empty. If None, uses all columns
that
Review Comment:
```suggestion
for multiple columns. If specified, must not be empty. If not
specified, uses all columns that
```
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