Steve Carlin created CALCITE-7287:
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             Summary: In simplifyLike, the makeLiteral call does not preserve 
the RelDataType
                 Key: CALCITE-7287
                 URL: https://issues.apache.org/jira/browse/CALCITE-7287
             Project: Calcite
          Issue Type: Bug
    Affects Versions: 1.41.0
            Reporter: Steve Carlin


In my Calcite code, I have a RexLiteral that is of type RelDataType.VARCHAR 
(the SqlTypeName is always CHAR)

However, this information is getting lost in the call here
[https://github.com/apache/calcite/blob/main/core/src/main/java/org/apache/calcite/rex/RexSimplify.java#L527]

The result of this simplification gives me a RelDataType.CHAR instead.



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