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Support UTF8 cast to Timestamp with timezone #3673

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merged 4 commits into from
Feb 10, 2023

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comphead
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@comphead comphead commented Feb 7, 2023

Which issue does this PR close?

Closes #3664.

Rationale for this change

Support UTF8 cast to TimestampTZ in formats like PG https://www.postgresql.org/docs/current/datatype-datetime.html#DATATYPE-DATETIME-TIME-TABLE

What changes are included in this PR?

Are there any user-facing changes?

No

@github-actions github-actions bot added the arrow Changes to the arrow crate label Feb 7, 2023
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comphead commented Feb 7, 2023

@waitingkuo @tustvold

Comment on lines 7854 to 7857
let array = Arc::new(valid) as ArrayRef;
let b = cast(
&array,
&DataType::Timestamp(TimeUnit::Nanosecond, Some("+00:00".to_string())),
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👍

it'd be great if we could add some test cases for casting to non-utc time zone

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Done

Comment on lines +171 to 172
| Timestamp(TimeUnit::Nanosecond, _)
) => true,
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Since you have *tz == Some("+00:00".to_owned()) as condition, it seems also necessary to put it here. Otherwise there will be casting error because can_cast_types reports it is supported.

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Done

@comphead comphead requested review from viirya and waitingkuo and removed request for viirya and waitingkuo February 8, 2023 16:02
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comphead commented Feb 9, 2023

@tustvold @viirya @waitingkuo please take a look until the code rots

@tustvold tustvold merged commit 07e2063 into apache:master Feb 10, 2023
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ursabot commented Feb 10, 2023

Benchmark runs are scheduled for baseline = bb4fc59 and contender = 07e2063. 07e2063 is a master commit associated with this PR. Results will be available as each benchmark for each run completes.
Conbench compare runs links:
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ec2-t3-xlarge-us-east-2] ec2-t3-xlarge-us-east-2
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on test-mac-arm] test-mac-arm
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-i9-9960x] ursa-i9-9960x
[Skipped ⚠️ Benchmarking of arrow-rs-commits is not supported on ursa-thinkcentre-m75q] ursa-thinkcentre-m75q
Buildkite builds:
Supported benchmarks:
ec2-t3-xlarge-us-east-2: Supported benchmark langs: Python, R. Runs only benchmarks with cloud = True
test-mac-arm: Supported benchmark langs: C++, Python, R
ursa-i9-9960x: Supported benchmark langs: Python, R, JavaScript
ursa-thinkcentre-m75q: Supported benchmark langs: C++, Java

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Support UTF8 cast to Timestamp with timezone
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