Github user tarekauel commented on a diff in the pull request:
https://github.com/apache/spark/pull/6981#discussion_r34866189
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/FunctionRegistry.scala
---
@@ -178,7 +178,17 @@ object FunctionRegistry {
// datetime functions
expression[CurrentDate]("current_date"),
- expression[CurrentTimestamp]("current_timestamp")
+ expression[CurrentTimestamp]("current_timestamp"),
+ expression[DateFormatClass]("date_format"),
+ expression[Year]("year"),
+ expression[Quarter]("quarter"),
+ expression[Month]("month"),
+ expression[Day]("day"),
--- End diff --
@rxin In Jira you mentioned there should be an alias. Can I just add
`expression[Day]("day_of_month")`?
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