Github user HyukjinKwon commented on a diff in the pull request:
https://github.com/apache/spark/pull/15513#discussion_r85254582
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/xpath.scala
---
@@ -107,9 +145,19 @@ case class XPathLong(xml: Expression, path:
Expression) extends XPathExtract {
}
}
+// scalastyle:off line.size.limit
@ExpressionDescription(
- usage = "_FUNC_(xml, xpath) - Returns a float value that matches the
xpath expression",
- extended = "> SELECT _FUNC_('<a><b>1</b><b>2</b></a>','sum(a/b)');\n3.0")
+ usage = "_FUNC_(xml, xpath) - Returns a float value, the value zero if
no match is found, or NaN if a match is found but the value is non-numeric.",
--- End diff --
Could you double check this please? it is.. `Returns a float value, the
value zero if ..., or NaN if ...` not `Returns a long value, or the value zero
if ...`.
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