Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/6872#discussion_r34862483
--- Diff: sql/core/src/main/scala/org/apache/spark/sql/functions.scala ---
@@ -67,6 +67,24 @@ object functions {
def column(colName: String): Column = Column(colName)
/**
+ * Convert a number from one base to another for the specified
expressions
+ *
+ * @group math_funcs
+ * @since 1.5.0
+ */
+ def conv(num: Column, fromBase: Column, toBase: Column): Column =
+ Conv(num.expr, fromBase.expr, toBase.expr )
+
+ /**
+ * Convert a number from one base to another for the specified
expressions
+ *
+ * @group math_funcs
+ * @since 1.5.0
+ */
+ def conv(num: String, fromBase: String, toBase: String): Column =
--- End diff --
yes i agree. i think we can always use real value here
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