Struct SortSpec 

pub struct SortSpec {
    pub sort_id: i64,
    pub fields: Vec<SortField>,
}

A table’s active sort spec (one generation of ducklake_sort_info).

Fields

sort_id: i64

ducklake_sort_info.sort_id for this spec generation.

fields: Vec<SortField>

Sort keys, ordered by sort_key_index (primary key first).

Implementations

impl SortSpec

pub fn is_producible(&self) -> bool

Whether this crate can apply this sort on write: true only when every key is a bare column reference. A spec containing any non-column expression is not producible and must be rejected by data-writing operations.

pub fn producible_columns( &self, ) -> Option<Vec<(String, SortDirection, NullOrder)>>

The producible sort keys as (column_name, direction, null_order), in order, or None if any key is not a bare column (see SortSpec::is_producible).

pub fn from_rows( rows: Vec<(i64, i32, String, String, String, String)>, ) -> Option<SortSpec>

Build a spec from catalog rows (sort_id, sort_key_index, expression, dialect, sort_direction, null_order) — the join of ducklake_sort_info and ducklake_sort_expression for the single LIVE generation, ordered by sort_key_index. Returns None when there are no rows (unsorted). Every row is expected to carry the same sort_id; the first row’s id is used.

Trait Implementations

impl Clone for SortSpec

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SortSpec

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

Formats the value using the given formatter.

impl Eq for SortSpec

impl PartialEq for SortSpec

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SortSpec