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Add example for ScalarStructBuilder::new_null, fix display for nullScalarValue::Struct - #9238
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ScalarStructBuilder::new_nullScalarStructBuilder::new_null, fix display for nullScalarValue::StructScalarStructBuilder::new_null, fix display for nullScalarValue::StructScalarStructBuilder::new_null, fix display for nullScalarValue::Structviirya
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Feb 15, 2024
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| /// Note this is different from a struct where each of the specified fields | ||
| /// are null (e.g. `{a: NULL}`) | ||
| /// |
appletreeisyellow
approved these changes
Feb 15, 2024
alamb
marked this pull request as ready for review
February 16, 2024 10:21
alamb
commented
Feb 16, 2024
| // ScalarValue Struct should always have a single element | ||
| assert_eq!(struct_arr.len(), 1); | ||
| if struct_arr.null_count() == struct_arr.len() { |
| let batch = RecordBatch::try_from_iter(vec![("s", arr as _)]).unwrap(); | ||
| #[rustfmt::skip] | ||
| let expected = [ |
ContributorAuthor
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This shows that new_null really does create a null value (and thus the change to impl Display is correct)
alamb
commented
Feb 16, 2024
ContributorAuthor
FYI @jayzhan211 |
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Which issue does this PR close?
Follow on to #9229
related to #9227
Rationale for this change
@NGA-TRAN asked internally about exactly what
ScalarStructBuilder::new_nullinternally so I wanted to document it in an example here.When I did the PR the display didn't match what I thought
new_nulldid, so I fixed a bug in null display as wellWhat changes are included in this PR?
ScalarStructBuilder::new_nullScalarValue::Structnull displayAre these changes tested?
Yes, new test and by CI
Are there any user-facing changes?