walterddr commented on issue #9658:
URL: https://github.com/apache/pinot/issues/9658#issuecomment-1295153136
some research
1. adding `@ScalarFunction` version is the easiest way to register correctly
with calcite, doing so to covert some of the missing pieces
2. type reconciliation is a bit tricky
- transform & filter almost all support numeric/string types as inputs
and can support return type differently based on type conversion required by
downstream
- scalar function using suffix type to differentiate for example
`arraySortInt`, `arraySortString` should be removed or have a rewrite
- all arithmetic functions take in `double` that also needs change (but
not at first go)
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