Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/15513#discussion_r85183882
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/xml/xpath.scala
---
@@ -56,8 +56,16 @@ abstract class XPathExtract extends BinaryExpression
with ExpectsInputTypes with
}
@ExpressionDescription(
- usage = "_FUNC_(xml, xpath) - Evaluates a boolean xpath expression.",
- extended = "> SELECT _FUNC_('<a><b>1</b></a>','a/b');\ntrue")
+ usage = "_FUNC_(xml, xpath) - Evaluates a boolean an XPath expression.",
--- End diff --
This is wrong, right? In Hive, the document is like:
`Returns true if the XPath expression evaluates to true, or if a matching
node is found.`
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