[GitHub] [arrow-datafusion] waitingkuo commented on issue #5398: Support to_timestamp with 2 arguments (timestamp format)

["waitingkuo (via GitHub)" <gi...@apache.org>]

waitingkuo commented on issue #5398:
URL: https://github.com/apache/arrow-datafusion/issues/5398#issuecomment-1445429435

   hi @alamb 
   
   do you think we should following postgresql formatting syntax or chorno's <https://docs.rs/chrono/latest/chrono/format/strftime/index.html#specifiers>
   
   
   in your example, the input contains timezone
   ```bash
   ❯  select to_timestamp('2014-05-11 01:07:34.779000+01:00', 'YYYY-MM-DD HH:MI:SS.NS');
   Plan("Coercion from [Utf8, Utf8] to the signature Uniform(1, [Int64, Timestamp(Nanosecond, None), Timestamp(Microsecond, None), Timestamp(Millisecond, None), Timestamp(Second, None), Utf8]) failed.")
   ```
   postgrseql's `to_timestamp` return `timestamptz` but datafusion's returns `timestamp`
   do we want to align postgreql's return type as well?


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