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Posted to dev@calcite.apache.org by "Steven Talbot (Jira)" <ji...@apache.org> on 2022/06/06 16:18:00 UTC

[jira] [Created] (CALCITE-5183) Impossible condition in return type inference for SqlIntervalOperator?

Steven Talbot created CALCITE-5183:
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             Summary: Impossible condition in return type inference for SqlIntervalOperator?
                 Key: CALCITE-5183
                 URL: https://issues.apache.org/jira/browse/CALCITE-5183
             Project: Calcite
          Issue Type: Bug
            Reporter: Steven Talbot


I could be wrong here, but I don't see how to make this work, and I don't see any tests for it being used on the relBuilder side of the fence (where the "impossible" type inference is invoked for me).

 

[https://github.com/apache/calcite/commit/03c76a7d2b896042ab417ddc36f1849f874ad3dd#diff-f6836cabfabc14be277e9f7406ab38996aaa45bac86969cecd64189c2fd7c745R57]  requires the second argument to the Interval call to be a SqlIntervalQualifier. In the context of RexCallBinding, I don't believe this is possible, since the argument has to be a RexLiteral, and RexLiteral exposes no way to directly wrap a value as a SqlIntervalQualifier like this. Again, this is where my reading of the code gets uncertain, but neither signature of RexBuilder.makeIntervalLiteral will give you what you want, and I don't see any way this could be possible. 

 

This issue means that there seems to be no way to use `SqlStdOperatorTable.INTERVAL` with RelBuilder.call.



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