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From gatorsmile <...@git.apache.org>
Subject [GitHub] spark pull request #18926: [SPARK-21712] [PySpark] Clarify type error for Co...
Date Mon, 14 Aug 2017 04:24:02 GMT
Github user gatorsmile commented on a diff in the pull request:

    https://github.com/apache/spark/pull/18926#discussion_r132871517
  
    --- Diff: python/pyspark/sql/column.py ---
    @@ -406,7 +406,13 @@ def substr(self, startPos, length):
             [Row(col=u'Ali'), Row(col=u'Bob')]
             """
             if type(startPos) != type(length):
    -            raise TypeError("Can not mix the type")
    +            raise TypeError(
    +                "startPos and length must be the same type. "
    +                "Got {startPos_t} and {length_t}, respectively."
    --- End diff --
    
    cc @ueshin 


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