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Posted to issues-all@impala.apache.org by "Steve Carlin (Jira)" <ji...@apache.org> on 2025/07/05 16:57:00 UTC

[jira] [Created] (IMPALA-14199) Better error message for unsupported functions

Steve Carlin created IMPALA-14199:
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             Summary: Better error message for unsupported functions
                 Key: IMPALA-14199
                 URL: https://issues.apache.org/jira/browse/IMPALA-14199
             Project: IMPALA
          Issue Type: Improvement
            Reporter: Steve Carlin


For the Calcite planner, when there is an unsupported function (e.g. ds_hll_sketch(smallint_col) ), the error message could be a bit better.  The error message shown is:

Cannot infer return type for DS_HLL_SKETCH; operand types:
[SMALLINT]

 

This makes it seem like the problem is Impala's problem, but the problem really lies in what ds_hll_sketch supports.

I think this problem exists not just in the Calcite planner but also in the existing code.



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