[jira] [Created] (ARROW-17458) [C++] CSV Writer: Unsupported cast from decimal to utf8

["Pavel Kovalenko (Jira)" <ji...@apache.org>]

Pavel Kovalenko created ARROW-17458:
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             Summary: [C++] CSV Writer: Unsupported cast from decimal to utf8 
                 Key: ARROW-17458
                 URL: https://issues.apache.org/jira/browse/ARROW-17458
             Project: Apache Arrow
          Issue Type: Bug
          Components: C++
    Affects Versions: 6.0.1
            Reporter: Pavel Kovalenko


The following code snippet fails with an Unsupported cast error if a table has a decimal column.
{code:cpp}
std::shared_ptr<arrow::Table> table;
ARROW_CHECK_OK(reader->ReadAll(&table));

std::shared_ptr<arrow::io::OutputStream> output = arrow::io::FileOutputStream::Open(csvPath).ValueOrDie();
auto writeOptions = arrow::csv::WriteOptions::Defaults();
writeOptions.include_header = false;
auto status = arrow::csv::WriteCSV(*table, writeOptions, output.get());
if (!status.ok()) {
    SETHROW_ERROR(std::runtime_error, "Couldn't write table csv: {}", status.message());
}
{code}


{code:cpp}
Unsupported cast from decimal128(7, 2) to utf8 using function cast_string
{code}




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