Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/6686#discussion_r31946432
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/Column.scala ---
@@ -822,7 +822,7 @@ class Column(protected[sql] val expr: Expression)
extends Logging {
* @group expr_ops
* @since 1.3.0
*/
- def cast(to: String): Column = cast(DataTypeParser.parse(to))
--- End diff --
actually i just realized DataTypeParser.parse already does what
DataType.fromString is doing. Maybe we can use that instead and remove
DataType.fromString? Sorry for noticing this only now.
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