[GitHub] [arrow-datafusion] waitingkuo opened a new issue, #3095: a `arrow_typeof` like posgresql's `pg_typeof`

[GitBox <gi...@apache.org>]

waitingkuo opened a new issue, #3095:
URL: https://github.com/apache/arrow-datafusion/issues/3095

   **Is your feature request related to a problem or challenge? Please describe what you are trying to do.**
   A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] 
   (This section helps Arrow developers understand the context and *why* for this feature, in addition to  the *what*)
   
   sometimes it's not that easy to know the output type. e.g.
   
   ```bash
   ❯ select now();
   +----------------------------+
   | now()                      |
   +----------------------------+
   | 2022-08-10 06:36:01.967605 |
   +----------------------------+
   1 row in set. Query took 0.000 seconds.
   ```
   
   i thought that it's a `Timestamp(Nanosecond, None)` until 
   
   ```bash
   ❯ select now() + 1;
   Plan("'Timestamp(Nanosecond, Some(\"UTC\")) + Int64' can't be evaluated because there isn't a common type to coerce the types to")
   ```
   
   **Describe the solution you'd like**
   A clear and concise description of what you want to happen.
   
   A `arrow_typeof` to output the type like this
   
   ```bash
   ❯ select arrow_typeof(now());
   +---------------------------------------+
   | arrowtypeof(now())                    |
   +---------------------------------------+
   | Timestamp(Nanosecond, Some("UTC")     |
   +---------------------------------------+
   1 row in set. Query took 0.000 seconds.
   ```
   
   **Describe alternatives you've considered**
   A clear and concise description of any alternative solutions or features you've considered.
   
   **Additional context**
   Add any other context or screenshots about the feature request here.
   


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[GitHub] [arrow-datafusion] alamb closed issue #3095: a `arrow_typeof` like posgresql's `pg_typeof`

[GitBox <gi...@apache.org>]

alamb closed issue #3095: a `arrow_typeof` like posgresql's `pg_typeof`
URL: https://github.com/apache/arrow-datafusion/issues/3095


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