Github user JDrit commented on a diff in the pull request:
https://github.com/apache/spark/pull/7606#discussion_r35480045
--- Diff: python/pyspark/sql/functions.py ---
@@ -375,6 +375,14 @@ def sparkPartitionId():
sc = SparkContext._active_spark_context
return Column(sc._jvm.functions.sparkPartitionId())
+def expr(str):
+ """Parses the expression string into the column that it represents
+
+ >>> df.select(expr("length(name)")).collect()
+ [Row('length(name)=5), Row('length(name)=3)]
--- End diff --
Spark added the `'` to the column name
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