Wei Hu created CALCITE-986:
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             Summary: Scalar Function for UDF problem when argument type is 
Date or Timestamp
                 Key: CALCITE-986
                 URL: https://issues.apache.org/jira/browse/CALCITE-986
             Project: Calcite
          Issue Type: Bug
          Components: core
    Affects Versions: 1.3.0-incubating, 1.4.0-incubating
            Reporter: Wei Hu
            Assignee: Julian Hyde


the field type is date  and I want to realize the MY_FUNC(date)

I use JavaTypeFactory.createSqlType to define the columns

*SQL : select MY_FUNC(date)  from table;*

if I set my function's argument type to java.sql.Date, calcite will report 
Exception:

_/Caused by: org.codehaus.commons.compiler.CompileException: Line 124, Column 
45: No applicable constructor/method found for actual parameters "int"; /_


if I set the function's argument type to  int, calcite will report Exception:

_/Caused by: org.apache.calcite.sql.validate.SqlValidatorException: No match 
found for function signature MY_FUNCTION(<DATE>)/




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