Struct QueryResult 

pub struct QueryResult { /* private fields */ }

The result of a query execution.

QueryResult contains the rows returned by a SELECT query, along with metadata about the result set.

Examples

Iterate over results:

let results = db.query("SELECT * FROM users")?;
for row in &results {
    let name: &str = row.get("name")?;
    println!("User: {}", name);
}

Access by index:

if let Some(row) = results.get(0) {
    let name: &str = row.get(0)?;
}

Implementations

impl QueryResult

pub fn empty() -> Self

Create an empty query result.

pub fn new(columns: Vec<String>, rows: Vec<QueryRow>) -> Self

Create a query result with the given columns and rows.

pub fn from_result_set(result_set: ResultSet) -> Self

Create a query result from the query engine’s result set.

pub fn columns(&self) -> &[String]

Returns the column names.

pub fn num_columns(&self) -> usize

Returns the number of columns.

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

Returns the rows.

pub fn len(&self) -> usize

Returns the number of rows.

pub fn is_empty(&self) -> bool

Returns true if there are no rows.

pub fn get(&self, index: usize) -> Option<&QueryRow>

Get a row by index.

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

Get the first row.

pub fn iter(&self) -> impl Iterator<Item = &QueryRow>

Returns an iterator over the rows.

pub fn column_index(&self, name: &str) -> Option<usize>

Get the column index for a column name.

Trait Implementations

impl Clone for QueryResult

fn clone(&self) -> QueryResult

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QueryResult

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

Formats the value using the given formatter.

impl<'a> IntoIterator for &'a QueryResult

type Item = &'a QueryRow

The type of the elements being iterated over.

type IntoIter = Iter<'a, QueryRow>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl IntoIterator for QueryResult

type Item = QueryRow

The type of the elements being iterated over.

type IntoIter = IntoIter<QueryRow>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.