Gengliang Wang created SPARK-37631:
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Summary: Code clean up on promoting strings in math functions
Key: SPARK-37631
URL: https://issues.apache.org/jira/browse/SPARK-37631
Project: Spark
Issue Type: Task
Components: SQL
Affects Versions: 3.3.0
Reporter: Gengliang Wang
Assignee: Gengliang Wang
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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