Enum SelectItem 

pub enum SelectItem {
    Wildcard,
    QualifiedWildcard(String),
    Expr {
        expr: Expr,
        alias: Option<String>,
    },
}

A select item in the projection list.

Variants

Wildcard

Wildcard (*).

QualifiedWildcard(String)

Qualified wildcard (table.*).

Expr

Expression with optional alias.

Fields

expr: Expr

The expression to select.

alias: Option<String>

Optional alias for the expression.

Trait Implementations

impl Clone for SelectItem

fn clone(&self) -> SelectItem

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SelectItem

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for SelectItem

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for SelectItem

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

Formats the value using the given formatter.

impl PartialEq for SelectItem

fn eq(&self, other: &SelectItem) -> 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 Serialize for SelectItem

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 SelectItem