feat: DataFrame supports unnesting multiple columns
#10118
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jonahgao
commented
Apr 17, 2024
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| /// Test unnesting a non-nullable list. | ||
| #[tokio::test] | ||
| async fn unnest_non_nullable_list() -> Result<()> { |
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Added the test suggested by @jayzhan211 in #10044 (comment)
jayzhan211
reviewed
Apr 18, 2024
| "| 3 | | | a |", | ||
| "+------+------------+------------+--------+", | ||
| ]; | ||
| assert_batches_sorted_eq!(expected, &results); |
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I think the result is deterministic, so we can check without sorting
Then, we can have a more straightforward result
[
"+------+------------+------------+--------+",
"| list | large_list | fixed_list | string |",
"+------+------------+------------+--------+",
"| 1 | | | a |",
"| 2 | 1.1 | | a |",
"| 3 | | | a |",
"| | 2.2 | 1 | b |",
"| | 3.3 | 2 | b |",
"| | 4.4 | | b |",
"| | | 3 | c |",
"| | | 4 | c |",
"| | | | d |",
"+------+------------+------------+--------+",
]
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I think the result is deterministic, so we can check without sorting
Updated. Thank you @jayzhan211 . It looks much better now.
jayzhan211
reviewed
Apr 18, 2024
| "| 3 | | | a |", | ||
| "+------+------------+------------+--------+", | ||
| ]; | ||
| assert_batches_sorted_eq!(expected, &results); |
|
Nice! Thanks @jonahgao |
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Which issue does this PR close?
N/A
Rationale for this change
#10044 has enabled SQL to support unnesting multiple columns, this PR adds the same functionality to
DataFrame.What changes are included in this PR?
Are these changes tested?
Yes
Are there any user-facing changes?
Yes
Mark the
unnest_columnAPI as deprecated, and add a new API calledunnest_columns.