jayzhan211 commented on code in PR #10118:
URL:
https://github.com/apache/arrow-datafusion/pull/10118#discussion_r1569707146
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datafusion/core/tests/dataframe/mod.rs:
##########
@@ -1437,6 +1438,91 @@ async fn unnest_analyze_metrics() -> Result<()> {
Ok(())
}
+
+#[tokio::test]
+async fn unnest_multiple_columns() -> Result<()> {
+ let df = table_with_mixed_lists().await?;
+ // Default behavior is to preserve nulls.
+ let results = df
+ .clone()
+ .unnest_columns(&["list", "large_list", "fixed_list"])?
+ .collect()
+ .await?;
+ let expected = [
+ "+------+------------+------------+--------+",
+ "| list | large_list | fixed_list | string |",
+ "+------+------------+------------+--------+",
+ "| | | | d |",
+ "| | | 3 | c |",
+ "| | | 4 | c |",
+ "| | 2.2 | 1 | b |",
+ "| | 3.3 | 2 | b |",
+ "| | 4.4 | | b |",
+ "| 1 | | | a |",
+ "| 2 | 1.1 | | a |",
+ "| 3 | | | a |",
+ "+------+------------+------------+--------+",
+ ];
+ assert_batches_sorted_eq!(expected, &results);
Review Comment:
I think the result is deterministic so checking with sorted is not necessary.
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