Struct ResultSet 

pub struct ResultSet { /* private fields */ }

A fully materialized, owned query result.

Unlike DuckResult, a ResultSet holds no FFI handles: it is Send, Sync, and Clone, and can be moved across threads or returned from a blocking task. Build one with DuckResult::materialize.

Implementations

impl ResultSet

pub fn rows(&self) -> &[DuckRow]

Returns the rows as a slice.

pub fn into_rows(self) -> Vec<DuckRow>

Consumes this result set, returning the owned rows.

pub fn changes(&self) -> u64

Returns the number of rows changed by the query that produced this result.

0 for SELECT statements.

pub fn column_names(&self) -> &[Box<str>]

Returns the column names in result order.

pub fn column_schema(&self) -> &[TypeInfo]

Returns the lossless TypeInfo of every column, in result order — DECIMAL precision, nested list/struct/map/union shape, enum labels, and so on, preserved from the query result.

pub fn statement_type(&self) -> StatementType

The kind of statement that produced this result (SELECT, INSERT, …).

pub fn result_type(&self) -> ResultType

What kind of output this result is (rows, changed-row count, nothing).

pub fn len(&self) -> usize

Returns the number of rows in this result set.

pub fn is_empty(&self) -> bool

Returns true if this result set has no rows.

pub fn first(&self) -> Option<&DuckRow>

Returns the first row, if any.

Trait Implementations

impl Clone for ResultSet

fn clone(&self) -> ResultSet

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ResultSet

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl IntoIterator for ResultSet

type Item = DuckRow

The type of the elements being iterated over.

type IntoIter = IntoIter<DuckRow>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<'a> IntoIterator for &'a ResultSet

type Item = &'a DuckRow

The type of the elements being iterated over.

type IntoIter = Iter<'a, DuckRow>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.