rdblue commented on a change in pull request #25354: [SPARK-28612][SQL] Add
DataFrameWriterV2 API
URL: https://github.com/apache/spark/pull/25354#discussion_r311728309
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File path: sql/core/src/main/scala/org/apache/spark/sql/functions.scala
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@@ -3900,6 +3900,61 @@ object functions {
*/
def to_csv(e: Column): Column = to_csv(e, Map.empty[String, String].asJava)
+ /**
+ * A transform for timestamps and dates to partition data into years.
+ *
+ * @group partition_transforms
+ * @since 3.0.0
+ */
+ def years(e: Column): Column = withExpr { Years(e.expr) }
Review comment:
Can you think of a solution to this besides supporting `year(ts)` as though
it were `years`? I'm concerned that would cause confusion for functions like
`hour` that have different meanings.
Maybe we should catch these and throw more helpful exceptions instead?
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