HyukjinKwon commented on a change in pull request #27499: [SPARK-30590][SQL]
Untyped select API cannot take typed column expression
URL: https://github.com/apache/spark/pull/27499#discussion_r382490723
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File path: sql/core/src/main/scala/org/apache/spark/sql/functions.scala
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@@ -352,8 +352,7 @@ object functions {
* @group agg_funcs
* @since 1.3.0
*/
- def count(columnName: String): TypedColumn[Any, Long] =
- count(Column(columnName)).as(ExpressionEncoder[Long]())
+ def count(columnName: String): Column = count(Column(columnName))
Review comment:
It seems a right change but let's revert this line considering it's code
freeze period ..
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