Enum databend_common_ast::ast::SelectTarget

pub enum SelectTarget {
    AliasedExpr {
        expr: Box<Expr>,
        alias: Option<Identifier>,
    },
    StarColumns {
        qualified: QualifiedName,
        column_filter: Option<ColumnFilter>,
    },
}

One item of the comma-separated list following SELECT

Variants

AliasedExpr

Expression with alias, e.g. SELECT t.a, b AS a, a+1 AS b FROM t

Fields

expr: Box<Expr>

alias: Option<Identifier>

StarColumns

Qualified star name, e.g. SELECT t.* exclude a, columns(expr) FROM t. Columns(“pattern_str”) Columns(lambda expression) For simplicity, star wildcard is involved.

Fields

qualified: QualifiedName

column_filter: Option<ColumnFilter>

Implementations

impl SelectTarget

pub fn is_star(&self) -> bool

pub fn exclude(&mut self, exclude: Vec<Identifier>)

pub fn has_window(&self) -> bool

pub fn function_call_name(&self) -> Option<String>

Trait Implementations

impl Clone for SelectTarget

fn clone(&self) -> SelectTarget

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SelectTarget

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

Formats the value using the given formatter.

impl Display for SelectTarget

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

Formats the value using the given formatter.

impl Drive for SelectTarget

fn drive<V: Visitor>(&self, visitor: &mut V)

impl DriveMut for SelectTarget

fn drive_mut<V: VisitorMut>(&mut self, visitor: &mut V)

impl PartialEq for SelectTarget

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