MaxGekk commented on a change in pull request #27295: Fix src/dest type
documentation for `to_timestamp`
URL: https://github.com/apache/spark/pull/27295#discussion_r368710239
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File path: python/pyspark/sql/functions.py
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@@ -1161,7 +1161,7 @@ def to_date(col, format=None):
@since(2.2)
def to_timestamp(col, format=None):
"""Converts a :class:`Column` of :class:`pyspark.sql.types.StringType` or
- :class:`pyspark.sql.types.TimestampType` into
:class:`pyspark.sql.types.DateType`
+ :class:`pyspark.sql.types.DateType` into
:class:`pyspark.sql.types.TimestampType`
Review comment:
`CAST` can accept not only `DateType` but others, see
https://github.com/apache/spark/blob/e0efd213eb6ff61ce2b0f54f55201899fa4171a6/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/Cast.scala#L423-L447
you can:
1. mention all those types in the comment, or
2. say that any types supported by `CAST` while converting to
`TimestampType`, for instance `DateType`.
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