beliefer commented on a change in pull request #28551:
URL: https://github.com/apache/spark/pull/28551#discussion_r426150960
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
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@@ -251,7 +251,7 @@ object FunctionRegistry {
expression[Log10]("log10"),
expression[Log1p]("log1p"),
expression[Log2]("log2"),
- expression[Log]("ln"),
+ expression[Log]("ln", true),
Review comment:
I reference
https://github.com/apache/spark/blob/a89006aba03a623960e5c4c6864ca8c899c81db9/sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/mathExpressions.scala#L66.
So the default pretty name of `Log` is 'LOG', I think we can use this
method to make it as 'ln'.
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