Struct Schema 

pub struct Schema {
    pub columns: Vec<ColumnMeta>,
}

Schema: ordered list of columns defining the row layout.

Fields

columns: Vec<ColumnMeta>

Implementations

impl Schema

pub fn new(columns: Vec<ColumnMeta>) -> Self

pub fn empty() -> Self

pub fn len(&self) -> usize

Number of columns.

pub fn is_empty(&self) -> bool

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

Find column index by name (unqualified lookup).

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

Find column index by qualified name (table.column).

pub fn column_names(&self) -> Vec<String>

Column names as strings.

pub fn merge(&self, other: &Schema) -> Schema

Merge two schemas (for joins).

Trait Implementations

impl Clone for Schema

fn clone(&self) -> Schema

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Schema

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

Formats the value using the given formatter.

impl PartialEq for Schema

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Schema

impl StructuralPartialEq for Schema