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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