Enum Expr 

pub enum Expr {
    Identifier(String),
    Literal(Literal),
    BinaryOp {
        left: Box<Expr>,
        op: BinaryOperator,
        right: Box<Expr>,
    },
    IsNull {
        expr: Box<Expr>,
        negated: bool,
    },
    UnaryOp {
        op: UnaryOperator,
        expr: Box<Expr>,
    },
    FunctionCall {
        name: String,
        args: Vec<Expr>,
    },
    WindowFunction {
        function: Box<Expr>,
        spec: WindowSpec,
    },
    Subquery(Box<SelectStatement>),
    Exists(Box<SelectStatement>),
    InSubquery {
        expr: Box<Expr>,
        subquery: Box<SelectStatement>,
    },
    Case {
        operand: Option<Box<Expr>>,
        when_then: Vec<(Expr, Expr)>,
        else_expr: Option<Box<Expr>>,
    },
    Wildcard,
}

Variants

Identifier(String)

Literal(Literal)

BinaryOp

Fields

left: Box<Expr>

op: BinaryOperator

right: Box<Expr>

IsNull

Fields

expr: Box<Expr>

negated: bool

UnaryOp

Fields

op: UnaryOperator

expr: Box<Expr>

FunctionCall

Fields

name: String

args: Vec<Expr>

WindowFunction

Fields

function: Box<Expr>

spec: WindowSpec

Subquery(Box<SelectStatement>)

Exists(Box<SelectStatement>)

InSubquery

Fields

expr: Box<Expr>

subquery: Box<SelectStatement>

Case

Fields

operand: Option<Box<Expr>>

when_then: Vec<(Expr, Expr)>

else_expr: Option<Box<Expr>>

Wildcard

Implementations

impl Expr

pub fn to_sql(&self) -> String

pub fn structural_eq(&self, other: &Expr) -> bool

pub fn normalize(&self) -> Expr

Trait Implementations

impl Clone for Expr

fn clone(&self) -> Expr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Expr

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

Formats the value using the given formatter.