Github user davies commented on a diff in the pull request:
https://github.com/apache/spark/pull/7589#discussion_r35691973
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -2406,6 +2435,20 @@ object functions {
def second(columnName: String): Column = second(Column(columnName))
/**
+ * Adds a time and an interval value
+ * @group datetime_funcs
+ * @since 1.5.0
+ */
+ def time_add(l: Column, r: Column): Column = TimeAdd(l.expr, r.expr)
--- End diff --
@rxin Should we use String for interval in API?
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