Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/15513#discussion_r84406407
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/InputFileName.scala
---
@@ -27,8 +27,14 @@ import org.apache.spark.unsafe.types.UTF8String
* Expression that returns the name of the current file being read.
*/
@ExpressionDescription(
- usage = "_FUNC_() - Returns the name of the current file being read if
available",
- extended = "> SELECT _FUNC_();\n ''")
+ usage = "_FUNC_() - Returns the name of the current file being read if
available.",
+ extended = """
+ _FUNC_(expr)
--- End diff --
this one is wrong
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