Struct ComputedColumn 

pub struct ComputedColumn {
    pub expression: Box<Expression>,
    pub persisted: bool,
    pub not_null: bool,
    pub persistence_kind: Option<String>,
    pub data_type: Option<DataType>,
}

Computed/generated column constraint

Fields

expression: Box<Expression>

The expression that computes the column value

persisted: bool

PERSISTED (TSQL) or STORED (MySQL/PostgreSQL) = true; VIRTUAL = false; None = not specified

not_null: bool

NOT NULL (TSQL computed columns)

persistence_kind: Option<String>

The persistence keyword used: “STORED”, “VIRTUAL”, or “PERSISTED” When None, defaults to dialect-appropriate output

data_type: Option<DataType>

Optional data type for SingleStore: AS (expr) PERSISTED TYPE NOT NULL

Trait Implementations

impl Clone for ComputedColumn

fn clone(&self) -> ComputedColumn

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ComputedColumn

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ComputedColumn

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for ComputedColumn

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

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 ComputedColumn