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Posted to github@arrow.apache.org by "JasonLi-cn (via GitHub)" <gi...@apache.org> on 2023/11/15 01:44:31 UTC

[I] UDF/UDAF/UDWF: refactor ReturnType [arrow-datafusion]

JasonLi-cn opened a new issue, #8182:
URL: https://github.com/apache/arrow-datafusion/issues/8182

   ### Def one UDF: 
   
   ```rust
   my_udf(expr, 'return_type')
   ```
   
   ### Using:
   
   case1:
   ```rust
   my_duf(col, 'UInt32')
   
   Return Type is:
   DataType::UInt32
   ```
   
   case2:
   ```rust
   my_duf(col, 'UInt64')
   
   Return Type is:
   DataType::UInt64
   ```
   
   At present, the above udf cannot be realized through the `ReturnTypeFunction`. This is because the `ReturnTypeFunction` provides only the data types of the input parameters.
   
   _Originally posted by @JasonLi-cn in https://github.com/apache/arrow-datafusion/discussions/7657_


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Re: [I] UDF/UDAF/UDWF: refactor ReturnType [arrow-datafusion]

Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb closed issue #8182: UDF/UDAF/UDWF: refactor ReturnType
URL: https://github.com/apache/arrow-datafusion/issues/8182


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Re: [I] UDF/UDAF/UDWF: refactor ReturnType [arrow-datafusion]

Posted by "JasonLi-cn (via GitHub)" <gi...@apache.org>.
JasonLi-cn commented on issue #8182:
URL: https://github.com/apache/arrow-datafusion/issues/8182#issuecomment-1811667774

   https://github.com/apache/arrow-datafusion/discussions/7657


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Re: [I] UDF/UDAF/UDWF: refactor ReturnType [arrow-datafusion]

Posted by "alamb (via GitHub)" <gi...@apache.org>.
alamb commented on issue #8182:
URL: https://github.com/apache/arrow-datafusion/issues/8182#issuecomment-2051432420

   Dupe of https://github.com/apache/arrow-datafusion/issues/8624


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