HyukjinKwon commented on code in PR #38288:
URL: https://github.com/apache/spark/pull/38288#discussion_r999155434
##########
python/pyspark/sql/functions.py:
##########
@@ -4884,6 +4884,42 @@ def check_string_field(field, fieldName): # type:
ignore[no-untyped-def]
return _invoke_function("window", time_col, windowDuration)
+def window_time(
+ windowColumn: "ColumnOrName",
+) -> Column:
+ """Computes the event time from a window column. The column window values
are produced
+ by window aggregating operators and are of type
+ StructType { start: TimestampType, end: TimestampType } where start is
inclusive and
+ end is exclusive. The event time of records produced by window aggregating
operators can be
+ computed as window_time(window) and are window.end - 1 microsecond (as
microsecond is the
+ minimal supported event time precision).
+ The window column must be one produced by a window aggregating operator -
of type
+ :class:`pyspark.sql.types.StructType`.
+ .. versionadded:: 3.4.0
+ Parameters
+ ----------
+ windowColumn : :class:`~pyspark.sql.Column`
+ The window column of a window aggregate records.
+ Returns
+ -------
+ :class:`~pyspark.sql.Column`
+ the column for computed results.
Review Comment:
```suggestion
the column for computed results.
```
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