Struct JoinResultSet 

pub struct JoinResultSet {
    pub columns: Vec<JoinColumnDef>,
    pub rows: Vec<Vec<Value>>,
}

Result of Database::select_join.

The column descriptions are stored once in columns; every entry of rows holds one Value per column, in the same order. Use Self::column_index to resolve a column name once and index each row, or Self::iter to walk the rows as JoinRow views.

Fields

columns: Vec<JoinColumnDef>

One description per output column, in row order. The table field names the table each column comes from.

rows: Vec<Vec<Value>>

One entry per row; rows[r][c] belongs to columns[c].

Implementations

impl JoinResultSet

pub fn len(&self) -> usize

Returns the number of rows.

pub fn is_empty(&self) -> bool

Returns true when the result has no rows.

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

Returns the index of column in Self::columns.

"table.column" matches the column of that table. A bare name matches the first column with that name in row order.

pub fn row(&self, index: usize) -> Option<JoinRow<'_>>

Returns a view over the row at index, if it exists.

pub fn iter(&self) -> impl Iterator<Item = JoinRow<'_>>

Iterates over the rows as JoinRow views.

Trait Implementations

impl Clone for JoinResultSet

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinResultSet

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

Formats the value using the given formatter.

impl Default for JoinResultSet

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for JoinResultSet

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for JoinResultSet

impl<'a> IntoIterator for &'a JoinResultSet

type Item = JoinRow<'a>

The type of the elements being iterated over.

type IntoIter = JoinRows<'a>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl PartialEq for JoinResultSet

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl Serialize for JoinResultSet

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for JoinResultSet