Enum SelectItem

pub enum SelectItem {
    UnnamedExpr(Expr),
    ExprWithAlias {
        expr: Expr,
        alias: Ident,
    },
    QualifiedWildcard(SelectItemQualifiedWildcardKind, WildcardAdditionalOptions),
    Wildcard(WildcardAdditionalOptions),
}

One item of the comma-separated list following SELECT

Variants

UnnamedExpr(Expr)

Any expression, not followed by [ AS ] alias

ExprWithAlias

An expression, followed by [ AS ] alias

Fields

expr: Expr

alias: Ident

QualifiedWildcard(SelectItemQualifiedWildcardKind, WildcardAdditionalOptions)

An expression, followed by a wildcard expansion. e.g. alias.*, STRUCT<STRING>('foo').*

Wildcard(WildcardAdditionalOptions)

An unqualified *

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<(), Error>

Formats the value using the given formatter.

impl Display for SelectItem

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

Formats the value using the given formatter.

impl Hash for SelectItem

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for SelectItem

fn cmp(&self, other: &SelectItem) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

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 PartialOrd for SelectItem

fn partial_cmp(&self, other: &SelectItem) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Spanned for SelectItem

fn span(&self) -> Span

Return the Span (the minimum and maximum Location) for this AST node, by recursively combining the spans of its children.

impl Visit for SelectItem

fn visit<V>(&self, visitor: &mut V) -> ControlFlow<<V as Visitor>::Break>

where V: Visitor,

impl VisitMut for SelectItem

fn visit<V>(&mut self, visitor: &mut V) -> ControlFlow<<V as VisitorMut>::Break>

where V: VisitorMut,

impl Eq for SelectItem

impl StructuralPartialEq for SelectItem