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  1. Spark
  2. SPARK-37631

Code clean up on promoting strings in math functions

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    • Task
    • Status: Resolved
    • Trivial
    • Resolution: Fixed
    • 3.3.0
    • 3.3.0
    • SQL
    • None

    Description

      There is some similar logic in promoting string to double type in TypeCoercion and AnsiTypeCoercion.

      We can change the function Abs/UnaryMinus/UnaryPositive to extend 

      ImplicitCastInputTypes so that string will implicitly cast to Double type in the rule `ImplicitTypeCasts`.  We don't have to repeat the logic in rule `PromoteStrings` or `PromoteStringLiterals`

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            Gengliang.Wang Gengliang Wang
            Gengliang.Wang Gengliang Wang
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              Created:
              Updated:
              Resolved: