Github user shea-parkes commented on a diff in the pull request:
https://github.com/apache/spark/pull/16094#discussion_r94609053
--- Diff: python/pyspark/sql/column.py ---
@@ -298,19 +299,34 @@ def isin(self, *cols):
isNotNull = _unary_op("isNotNull", "True if the current expression is
not null.")
@since(1.3)
- def alias(self, *alias):
+ def alias(self, *alias, **kwargs):
"""
Returns this column aliased with a new name or names (in the case
of expressions that
return more than one column, such as explode).
+ Optional ``metadata`` keyword argument can be passed when aliasing
a single column.
--- End diff --
Congrats on the release of v2.1. I believe the `versionchanged` target of
v2.2 is now accurate.
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