alamb opened a new issue, #3982:
URL: https://github.com/apache/arrow-datafusion/issues/3982

   **Is your feature request related to a problem or challenge? Please describe 
what you are trying to do.**
   As we add more full featured date/time support for DataFusion users need to 
be able to use the current time to calculate things like "all data in the last 
5 hours" 
   
   **Describe the solution you'd like**
   Support the `current_time` postgres function 
https://www.postgresql.org/docs/current/functions-datetime.html#FUNCTIONS-DATETIME-CURRENT
   
   Note I think we should avoid the `current_time(precision)` variant initially 
-- we can implement it as a follow on PR.
   
   **Describe alternatives you've considered**
   A clear and concise description of any alternative solutions or features 
you've considered.
   
   **Additional context**
   This is a feature request we got from an early (internal) user of InfluxDB 
IOx
   
   I believe this is a good first issue as you can follow the existing 
implementation of  `now()` 
   - [ ] Physical support: 
https://github.com/apache/arrow-datafusion/blob/f1322592046a7ea895820286a2ad16d934540d92/datafusion/physical-expr/src/functions.rs#L424-L429)
 and use the same `query_execution_start_time` field
   - [ ] Tests: 
https://github.com/apache/arrow-datafusion/blob/beeb631d0bb979e9b6826f6cd3eae2d0a24f471e/datafusion/core/tests/sql/timestamp.rs#L417
   
   It would be a good exercise to add a new build in scalar function, physical 
planing support, and then tests
   
   Note this the same ticket exists for the `current_date` function 
https://github.com/apache/arrow-datafusion/issues/3981
   


-- 
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.

To unsubscribe, e-mail: [email protected]

For queries about this service, please contact Infrastructure at:
[email protected]

Reply via email to