HyukjinKwon commented on a change in pull request #23748: [SPARK-23619][SQL]
Added default column names for explode & posexplode in comments
URL: https://github.com/apache/spark/pull/23748#discussion_r255442174
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File path: sql/core/src/main/scala/org/apache/spark/sql/functions.scala
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@@ -3305,6 +3305,8 @@ object functions {
/**
* Creates a new row for each element in the given array or map column.
+ * Uses the default column name `col` for elements in the array and
+ * `key` and `value` for elements in the map unless specified otherwise.
Review comment:
Let's also update Python doc and R doc while we're here. Take a look for
functions.py and functions.R
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