Enum Column 

pub enum Column {
    Star,
    Named(String),
    Aliased {
        name: String,
        alias: String,
    },
    Aggregate {
        col: String,
        func: AggregateFunc,
    },
    Def {
        name: String,
        data_type: String,
        constraints: Vec<Constraint>,
    },
    Mod {
        kind: ModKind,
        col: Box<Column>,
    },
    Window {
        name: String,
        func: String,
        params: Vec<Value>,
        partition: Vec<String>,
        order: Vec<Cage>,
    },
    Case {
        when_clauses: Vec<(Condition, Value)>,
        else_value: Option<Box<Value>>,
        alias: Option<String>,
    },
}

A column reference.

Variants

Star

All columns (*)

Named(String)

A named column

Aliased

An aliased column (col AS alias)

Fields

name: String

alias: String

Aggregate

An aggregate function (COUNT(col))

Fields

col: String

func: AggregateFunc

Def

Column Definition (for Make keys)

Fields

name: String

data_type: String

constraints: Vec<Constraint>

Mod

Column Modification (for Mod keys)

Fields

kind: ModKind

col: Box<Column>

Window

Window Function Definition

Fields

name: String

func: String

params: Vec<Value>

partition: Vec<String>

order: Vec<Cage>

Case

CASE WHEN expression

Fields

when_clauses: Vec<(Condition, Value)>

WHEN condition THEN value pairs

else_value: Option<Box<Value>>

ELSE value (optional)

alias: Option<String>

Optional alias

Trait Implementations

impl Clone for Column

fn clone(&self) -> Column

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Column

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Column

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Column

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

Formats the value using the given formatter.

impl PartialEq for Column

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

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 Column