Evan Chan created ARROW-12391:
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Summary: [Rust][DataFusion] Implement date_trunc() function
Key: ARROW-12391
URL: https://issues.apache.org/jira/browse/ARROW-12391
Project: Apache Arrow
Issue Type: New Feature
Components: Rust - DataFusion
Affects Versions: 3.0.0
Reporter: Evan Chan
Fix For: 4.0.0
Implement the date_trunc function, as described in this PostGres manual:
[https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-TRUNC]
This would allow for the following use cases to be solved:
* casting of timestamps to other resolutions, such as millis and micros
* rounding dates/timestamps
It also allows the user to explicitly allow the truncation of timestamp
precision.
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