igor-suhorukov opened a new issue, #211:
URL: https://github.com/apache/arrow-java/issues/211
### Describe the enhancement requested
DuckDB support ArrowArrayStream as virtual table. JDBC driver of DuckDB has
"register" ArrowStream method on DuckDBConnection.
VectorSchemaRoot convertion into ArrowArrayStream object will allows perform
complex SQL transformation with CTE,window function on existing Arrow data from
java process without data format transformation and also as workaround to write
parquet file from VectorSchemaRoot.
```
try (DuckDBConnection connection = (DuckDBConnection)
DriverManager.getConnection("jdbc:duckdb:")){
connection.registerArrowStream("arrow_stream", arrowArrayStream);
try (Statement preparedStatement = connection.createStatement()){
preparedStatement.executeUpdate("COPY (SELECT * FROM arrow_stream)
TO '"+filePath+"' (FORMAT 'PARQUET', CODEC 'ZSTD')");
}
}
```
@lidavidm do you have idea how to implement such conversion?
### Component(s)
Java
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