HyukjinKwon commented on code in PR #38327:
URL: https://github.com/apache/spark/pull/38327#discussion_r1002841262
##########
python/pyspark/sql/connect/dataframe.py:
##########
@@ -157,11 +157,44 @@ def coalesce(self, num_partitions: int) -> "DataFrame":
def describe(self, cols: List[ColumnRef]) -> Any:
...
+ def dropDuplicates(self, subset: Optional[List[str]] = None) ->
"DataFrame":
+ """Return a new :class:`DataFrame` with duplicate rows removed,
+ optionally only deduplicating based on certain columns.
+
+ .. versionadded:: 3.4.0
+
+ Parameters
+ ----------
+ subset : List of column names, optional
+ List of columns to use for duplicate comparison (default All
columns).
+
+ Returns
+ -------
+ :class:`DataFrame`
+ DataFrame without duplicated rows.
+ """
+ if subset is None:
+ return DataFrame.withPlan(
+ plan.Deduplicate(child=self._plan, all_columns_as_keys=True),
session=self._session
Review Comment:
cc @cloud-fan
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