Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17999#discussion_r116860631
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -1991,6 +1991,22 @@ object functions {
def tan(columnName: String): Column = tan(Column(columnName))
/**
+ * Computes the cotangent of the given column.
+ *
+ * @group math_funcs
+ * @since 2.2.0
+ */
+ def cot(e: Column): Column = withExpr { Cot(e.expr) }
+
+ /**
+ * Computes the cotangent of the given column name.
+ *
+ * @group math_funcs
+ * @since 2.2.0
+ */
+ def cot(colName: String): Column = cot(Column(colName))
+
+ /**
--- End diff --
Sure. Let us keep this file untouched in this PR.
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