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DuckDB 2.0 ドキュメント 全文検索
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- Handle Results 9414
- Overview Beyond the standard JDBC ResultSet , the DuckDB driver can hand results to Apache Arrow , stream large results instead of materializing them, and expose raw columnar data chunks. This page covers each of these result-handling optio
...ns. Arrow Methods The DuckDB result set integrates with Apache Arrow through the Java Arrow bindings . A DuckDBResultSet can export its rows as an Arrow stream...hemaRoot . import org.apache.arrow.memory.RootAllocator; import org.apache.arrow.vector.ipc.ArrowReader; import org.duckdb.DuckDBResultSet; try (var conn = DriverManager.getConnection("jdbc:duckdb:"); var stmt = conn.prepareStatement("SELECT * FROM generate_ser...ies(2000)"); var resultset = (DuckDBResultSet) stmt.executeQuery(); var allocator = new RootAllocator()) { try (var reader = (ArrowReader) resultset.arrowExportStream(a... - https://man.mtool.work/duckdb/2.0/clients/java/result_handling.html
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