HyukjinKwon commented on a change in pull request #26435: [SPARK-29821][SQL]
Allow calling non-aggregate SQL functions with column name
URL: https://github.com/apache/spark/pull/26435#discussion_r344531175
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File path: sql/core/src/main/scala/org/apache/spark/sql/functions.scala
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@@ -1082,6 +1082,14 @@ object functions {
*/
def isnan(e: Column): Column = withExpr { IsNaN(e.expr) }
+ /**
+ * Return true iff the column is NaN.
+ *
+ * @group normal_funcs
+ * @since 1.6.0
+ */
+ def isnan(columnName: String): Column = isnan(Column(columnName))
Review comment:
We won't add this per the comments on the top of this file.
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