Andrew Lamb created ARROW-12319:
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Summary: [Rust][DataFusion] Improve the errors that result when a
aggregate type is not supported
Key: ARROW-12319
URL: https://issues.apache.org/jira/browse/ARROW-12319
Project: Apache Arrow
Issue Type: Improvement
Components: Rust - DataFusion
Reporter: Andrew Lamb
When you try and run a query such as
{code}
select AVG(ts_colum) from t;
{code}
where ts_column has `DataType::Timestamp` type, you get a pretty unintelligible
error message
"Coercion from [Timestamp(Nanosecond, None)] to the signature Uniform(1, [Int8,
Int16, Int32, Int64, UInt8, UInt16, UInt32, UInt64, Float32, Float64]) failed."
This error should be improved to say something more like AVG is not supported
for {datatype} try an explicit cast.
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