Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10435#discussion_r48808153
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1863,6 +1863,17 @@ object functions extends LegacyFunctions {
*/
def crc32(e: Column): Column = withExpr { Crc32(e.expr) }
+ /**
+ * Calculates the hash code of given columns, and returns the result as
a int column.
+ *
+ * @group misc_funcs
+ * @since 2.0
+ */
+ @scala.annotation.varargs
+ def hash(col: Column, cols: Column*): Column = withExpr {
--- End diff --
this should just be a single column vararg, rather than one followed by
vararg?
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