spec_arrow_fetch_arrow_chunk: spec_arrow_fetch_arrow_chunk

In r-dbi/DBItest: Testing DBI Backends

spec_arrow_fetch_arrow_chunk

Description

spec_arrow_fetch_arrow_chunk

Value

dbFetchArrowChunk() always returns an object coercible to a data.frame with as many rows as records were fetched and as many columns as fields in the result set, even if the result is a single value or has one or zero rows.

Failure modes

An attempt to fetch from a closed result set raises an error.

Specification

Fetching multi-row queries with one or more columns returns the next chunk. The size of the chunk is implementation-specific. The object returned by dbFetchArrowChunk() can also be passed to nanoarrow::as_nanoarrow_array() to create a nanoarrow array object. The chunk size is implementation-specific.

See Also

Other Arrow specifications: spec_arrow_append_table_arrow, spec_arrow_create_table_arrow, spec_arrow_fetch_arrow, spec_arrow_get_query_arrow, spec_arrow_read_table_arrow, spec_arrow_send_query_arrow, spec_arrow_write_table_arrow, spec_result_clear_result

r-dbi/DBItest documentation built on April 20, 2024, 6:10 p.m.