zero323 commented on issue #27406: [SPARK-30681][PYSPARK][SQL] Add higher order functions API to PySpark URL: https://github.com/apache/spark/pull/27406#issuecomment-580411272 > > ```python > > df.selectExpr("transform(values, x -> x + 1)") > > ``` > > So with this PR, this can be rewritten as follows, correct? > > ```python > from pyspark.sql.functions import transform > > df.select(transform('values', lambda x: x + 1)) > ``` That's exactly it. I think it is much easier to write, and while there is some potential for confusion (not really different from Scala variant), it outweighs the benefits. > > ### Does this PR introduce any user-facing change? > > No. > > Since this PR adds new public PySpark APIs, shouldn't this be "yes"? Or is that only when modifying an existing public API? Description says: > If yes, please clarify the previous behavior and the change this PR proposes Since there was no "previous behavior", I'd opted for no.
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