Github user JoshRosen commented on a diff in the pull request:
https://github.com/apache/spark/pull/2243#discussion_r17087493
--- Diff: python/pyspark/sql.py ---
@@ -971,23 +969,26 @@ def registerFunction(self, name, f,
returnType=StringType()):
>>> sqlCtx.registerFunction("stringLengthInt", lambda x: len(x),
IntegerType())
>>> sqlCtx.sql("SELECT stringLengthInt('test')").collect()
[Row(c0=4)]
- >>> sqlCtx.registerFunction("twoArgs", lambda x, y: len(x) + y,
IntegerType())
--- End diff --
Ah, okay. Maybe it's obvious how two-argument functions should work so we
won't need to expose this in end-user documentation.
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