Ran Tao created CALCITE-5874:
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Summary: Add a withReturnTypeInference copy method for
SqlBasicFunction
Key: CALCITE-5874
URL: https://issues.apache.org/jira/browse/CALCITE-5874
Project: Calcite
Issue Type: Improvement
Components: core
Affects Versions: 1.34.0
Reporter: Ran Tao
Assignee: Ran Tao
Fix For: 1.36.0
some sql functions have same sqlkind and name but with different return types.
e.g. Soundex function, calcite and bigquery return varchar(4), however spark
return non-fixed length. If we want reuse Soundex, we can only use create
method to pass all parameters, it's a bit bloated.
If we add a `withReturnTypeInference`, we can simply use this to copy from
existed functions.
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