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https://issues.apache.org/jira/browse/ARROW-6290?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Grove updated ARROW-6290:
------------------------------
Fix Version/s: 0.15.0
> [Rust] [DataFusion] sql_csv example errors when running
> -------------------------------------------------------
>
> Key: ARROW-6290
> URL: https://issues.apache.org/jira/browse/ARROW-6290
> Project: Apache Arrow
> Issue Type: Bug
> Components: Rust, Rust - DataFusion
> Reporter: Andrew Schoenberger
> Priority: Minor
> Labels: pull-request-available
> Fix For: 0.15.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The current version of
> [https://github.com/apache/arrow/blob/master/rust/datafusion/examples/csv_sql.rs]
> errors when running it.
> {code:java}
> thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value:
> ExecutionError("Cannot compare Float32 with Float64")',
> src/libcore/result.rs:1084:5{code}
> I believe that this is due to column c11 being declared as DataType::Float32
> while the WHERE clause parses the numbers as DataType::Float64. Since the
> comparison_ops only matches when the parsed data types for left and right are
> the same, this errors out.
> I was able to get this running locally through either of the following two
> methods:
> (1) by changing the schema for c11 to be a DataType::Float64.
> (2) by forcing a compute::cast in the case that the left data type is
> different from the right data type in the BinaryExpr (this is likely not the
> best long-term fix, but it works for this case).
> It is also possible that this issue could be due to some mistake or incorrect
> assumption I am making when running it on my end (I am pretty new to the
> project).
>
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