Enum qrlew::expr::function::Function

pub enum Function {
    Opposite,
    Not,
    Plus,
    Minus,
    Multiply,
    Divide,
    Modulo,
    StringConcat,
    Gt,
    Lt,
    GtEq,
    LtEq,
    Eq,
    NotEq,
    And,
    Or,
    Xor,
    BitwiseOr,
    BitwiseAnd,
    BitwiseXor,
    InList,
    Exp,
    Ln,
    Log,
    Abs,
    Sin,
    Cos,
    Sqrt,
    Pow,
    Case,
    Concat(usize),
    CharLength,
    Lower,
    Upper,
    Md5,
    Position,
    Random(usize),
    CastAsText,
    CastAsFloat,
    CastAsInteger,
    CastAsDateTime,
    Least,
    Greatest,
}

The list of operators inspired by: https://docs.rs/sqlparser/latest/sqlparser/ast/enum.BinaryOperator.html and mostly: https://docs.rs/polars/latest/polars/prelude/enum.Operator.html

Variants

Opposite

Not

Plus

Minus

Multiply

Divide

Modulo

StringConcat

Gt

Lt

GtEq

LtEq

Eq

NotEq

And

Or

Xor

BitwiseOr

BitwiseAnd

BitwiseXor

InList

Exp

Ln

Log

Abs

Sin

Cos

Sqrt

Pow

Case

Concat(usize)

CharLength

Lower

Upper

Md5

Position

Random(usize)

CastAsText

CastAsFloat

CastAsInteger

CastAsDateTime

Least

Greatest

Implementations

impl Function

pub fn style(self) -> Style

Return the style of display

pub fn arity(self) -> Arity

Return the arity of the function

pub fn super_image(self, sets: &[DataType]) -> Result<DataType>

Return the function object implementing the function

pub fn value(self, args: &[Value]) -> Result<Value>

Return the function object implementing the function

Trait Implementations

impl Clone for Function

fn clone(&self) -> Function

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Function

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

Formats the value using the given formatter.

impl Display for Function

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

Formats the value using the given formatter.

impl Hash for Function

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

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 PartialEq for Function

fn eq(&self, other: &Function) -> bool

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for Function

impl Eq for Function

impl StructuralEq for Function

impl StructuralPartialEq for Function