Enum SelectExpr 

pub enum SelectExpr {
    Agg {
        func: AggFn,
        col: String,
        alias: Option<String>,
    },
    ColAs {
        col: String,
        alias: String,
    },
}

A structured SELECT-list expression (aggregate or aliased column).

The col/alias identifiers are stored raw and escaped at compile time (a * column is emitted unescaped, e.g. COUNT(*)). Backs the select_count / select_sum / … and select_as helpers.

Variants

Agg

FUNC(col) with an optional AS alias — e.g. COUNT(*) AS "total".

Fields

func: AggFn

The aggregate function.

col: String

Raw column identifier (escaped at compile time; * passed through).

alias: Option<String>

Optional alias (escaped at compile time).

ColAs

col AS alias — both identifiers escaped at compile time.

Fields

col: String

Raw column identifier (escaped at compile time).

alias: String

Alias (escaped at compile time).

Trait Implementations

impl Clone for SelectExpr

fn clone(&self) -> SelectExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectExpr

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

Formats the value using the given formatter.

impl PartialEq for SelectExpr

fn eq(&self, other: &SelectExpr) -> 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 SelectExpr