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https://issues.apache.org/jira/browse/ARROW-12319?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andrew Lamb updated ARROW-12319:
--------------------------------
Description:
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."
was:
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.
> [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
> Priority: Minor
>
> 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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