cloud-fan commented on code in PR #50470:
URL: https://github.com/apache/spark/pull/50470#discussion_r2039135991
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sql/api/src/main/scala/org/apache/spark/sql/Column.scala:
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@@ -803,6 +803,26 @@ class Column(val node: ColumnNode) extends Logging with
TableValuedFunctionArgum
*/
def isInCollection(values: java.lang.Iterable[_]): Column =
isInCollection(values.asScala)
+ /**
+ * A boolean expression that is evaluated to true if the value of this
expression is contained
+ * by the provided Dataset/DataFrame.
+ *
+ * @group subquery
+ * @since 4.1.0
+ */
+ def isin(ds: Dataset[_]): Column = {
+ if (ds == null) {
Review Comment:
how does it map to its SQL equivalent?
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