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Commit 1150a19b authored by Wenchen Fan's avatar Wenchen Fan Committed by Michael Armbrust
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[SPARK-8670] [SQL] Nested columns can't be referenced in pyspark 

This bug is caused by a wrong column-exist-check in `__getitem__` of pyspark dataframe. `DataFrame.apply` accepts not only top level column names, but also nested column name like `a.b`, so we should remove that check from `__getitem__`.

Author: Wenchen Fan <cloud0fan@outlook.com>

Closes #8202 from cloud-fan/nested.
parent 2a6590e5
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