Github user dongjoon-hyun commented on a diff in the pull request:
https://github.com/apache/spark/pull/22421#discussion_r217792214
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/collectionOperations.scala
---
@@ -131,7 +131,7 @@ case class Size(child: Expression) extends
UnaryExpression with ExpectsInputType
examples = """
Examples:
> SELECT _FUNC_(map(1, 'a', 2, 'b'));
- [1,2]
+ [1, 2]
--- End diff --
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