Enum SelectColumn 

pub enum SelectColumn {
    Wildcard,
    Column {
        name: String,
        alias: Option<String>,
    },
    Aggregate {
        function: AggregateFunction,
        column: Box<SelectColumn>,
        alias: Option<String>,
    },
}

A column in the SELECT clause

Variants

Wildcard

SELECT * - all columns

Column

SELECT column_name or SELECT column_name AS alias

Fields

name: String

alias: Option<String>

Aggregate

SELECT COUNT(*), SUM(column), etc.

Fields

function: AggregateFunction

column: Box<SelectColumn>

alias: Option<String>

Trait Implementations

impl Clone for SelectColumn

fn clone(&self) -> SelectColumn

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectColumn

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

Formats the value using the given formatter.

impl Display for SelectColumn

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

Formats the value using the given formatter.

impl PartialEq for SelectColumn

fn eq(&self, other: &SelectColumn) -> 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 StructuralPartialEq for SelectColumn