Struct IndexDef 

pub struct IndexDef {
    pub name: String,
    pub keys: Vec<IndexKey>,
    pub unique: bool,
    pub predicate_sql: Option<String>,
    pub predicate_expr: Option<Expr>,
    pub kind: IndexKind,
    pub ann_filter_cols: Vec<u16>,
}

IndexKey::Column for CREATE INDEX ON t (email), IndexKey::Expr for LOWER(email).

Fields

name: String

keys: Vec<IndexKey>

unique: bool

predicate_sql: Option<String>

predicate_expr: Option<Expr>

kind: IndexKind

ann_filter_cols: Vec<u16>

ANN-only: schema column indices pushed into the PRISM cell filter. Empty for every other index kind.

Implementations

impl IndexDef

pub fn from_column_lists( name: String, columns: Vec<u16>, collations: Vec<Collation>, unique: bool, predicate_sql: Option<String>, predicate_expr: Option<Expr>, kind: IndexKind, ) -> Self

Used by FK/UNIQUE auto-indexes; expression-key indexes go through a different path.

pub fn columns_vec(&self) -> Vec<u16>

Expression keys are skipped (positions only come from IndexKey::Column).

pub fn collations_vec(&self) -> Vec<Collation>

Expression keys default to Binary.

pub fn column_positions_iter(&self) -> impl Iterator<Item = u16> + '_

pub fn collation_at(&self, i: usize) -> Collation

pub fn is_pure_column_index(&self) -> bool

Trait Implementations

impl Clone for IndexDef

fn clone(&self) -> IndexDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexDef

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

Formats the value using the given formatter.