Function libduckdb_sys::duckdb_stream_fetch_chunk

pub unsafe extern "C" fn duckdb_stream_fetch_chunk(
    result: duckdb_result
) -> duckdb_data_chunk

Fetches a data chunk from the (streaming) duckdb_result. This function should be called repeatedly until the result is exhausted.

The result must be destroyed with duckdb_destroy_data_chunk.

This function can only be used on duckdb_results created with ‘duckdb_pending_prepared_streaming’

If this function is used, none of the other result functions can be used and vice versa (i.e. this function cannot be mixed with the legacy result functions or the materialized result functions).

It is not known beforehand how many chunks will be returned by this result.

result: The result object to fetch the data chunk from. returns: The resulting data chunk. Returns NULL if the result has an error.