Enum ViewColumn 

pub enum ViewColumn {
    Original {
        source_index: usize,
        name: String,
    },
    Derived {
        name: String,
        expression: SqlExpression,
        cached_values: Vec<DataValue>,
    },
}

Represents a column in a computed view - either original or derived

Variants

Original

Direct reference to a column in the original table

Fields

source_index: usize

name: String

Derived

Computed/derived column with cached results

Fields

name: String

expression: SqlExpression

cached_values: Vec<DataValue>

Trait Implementations

impl Clone for ViewColumn

fn clone(&self) -> ViewColumn

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ViewColumn

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

Formats the value using the given formatter.