[GitHub] spark issue #14389: [SPARK-16714][SQL] map, array function should accept dec...

[petermaxlee <gi...@git.apache.org>]

Github user petermaxlee commented on the issue:

    https://github.com/apache/spark/pull/14389
  
    I was looking at the code, and I think this is a more general problem with decimal widening. The same problem exists for least, and other functions.
    
    ```
    scala> sql("select least(0.1, 0.01)").collect()
    org.apache.spark.sql.AnalysisException: cannot resolve 'least(CAST(0.1 AS DECIMAL(1,1)), CAST(0.01 AS DECIMAL(2,2)))' due to data type mismatch: The expressions should all have the same type, got LEAST (ArrayBuffer(DecimalType(1,1), DecimalType(2,2))).; line 1 pos 7
    ```


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