Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/6836#discussion_r32532604
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1223,6 +1223,54 @@ object functions {
def rint(columnName: String): Column = rint(Column(columnName))
/**
+ * Computes rounded value of the given input.
+ *
+ * @group math_funcs
+ * @since 1.5.0
+ */
+ def round(e: Double): Column = round(e, 0)
+
+ /**
+ * Computes rounded value of the given input.
+ *
+ * @group math_funcs
+ * @since 1.5.0
+ */
+ def round(e: Column): Column = round(e.expr, 0)
+
+ /**
+ * Computes rounded value of the given input.
+ *
+ * @group math_funcs
+ * @since 1.5.0
+ */
+ def round(columnName: String): Column = round(Column(columnName))
+
+ /**
+ * Computes rounded value of the given input.
+ *
+ * @group math_funcs
+ * @since 1.5.0
+ */
+ def round(e: Double, scale: Int): Column = round(lit(e), scale)
--- End diff --
This probably not necessary, as both of the parameters are
literals(constant value).
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