apache / apache/datafusion

Timestamps having different timezone cannot be represented in the same field of a schema

Open
#5,823 1 comment 1 reaction 0 assignees View on GitHub
enhancement
Dominant language
Rust
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Forks
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Avg merge
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Merged PRs (30d)
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Description

### Is your feature request related to a problem or challenge?

We should be able to handle the cases where timestamps with different timezone data are stored in the same field of a schema. However, `Field` struct holds a `DataType` info, and if we want to place a different timezone:
`ArrowError(InvalidArgumentError("column types must match schema types, expected Timestamp(Millisecond, Some(\"+03:00\")) but found Timestamp(Millisecond, None) at column index 0"))`

### Describe the solution you'd like

Timezone check for timestamps can be ignored while matching columns with the schema

### Describe alternatives you've considered

-

### Additional context

-

Contributor guide

Open the contributing guide

Research direction

Start by locating the schema column-matching logic that compares Timestamp timezone metadata and read the surrounding tests. Reproduce the reported mismatch between Some("+03:00") and None, then verify that columns differing only in timezone metadata are accepted without allowing unrelated type differences.

Written by the indexing model from the issue text.

Assessment

Tech stack
rust
Domain
data-engineering, databases
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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