Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/17371#discussion_r107096074
--- Diff: python/pyspark/sql/functions.py ---
@@ -1163,7 +1163,10 @@ def check_string_field(field, fieldName):
raise TypeError("%s should be provided as a string" %
fieldName)
sc = SparkContext._active_spark_context
- time_col = _to_java_column(timeColumn)
+ if isinstance(timeColumn, Column):
--- End diff --
After this change, you can't pass in a `Column`. But it is supported for
now.
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