HyukjinKwon commented on a change in pull request #30984:
URL: https://github.com/apache/spark/pull/30984#discussion_r550952448
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/DataSourceStrategy.scala
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@@ -737,6 +737,10 @@ abstract class PushableColumnBase {
}
case s: GetStructField if nestedPredicatePushdownEnabled =>
helper(s.child).map(_ :+ s.childSchema(s.ordinal).name)
+ case GetJsonObject(col, field) =>
+ val colName = col.toString.split("#")(0)
+ val fieldName = field.toString.split("\\.").last
+ Some(Seq("GetJsonObject(" + col + "," + field + ")"))
Review comment:
I know it is rather rare case but how do we distinguish
`GetJsonObject(col, field)` as a field name vs as the expression pushed down? I
doubt if this is a general way that we can leverage to push expressions down.
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