Struct IndexInfo 

pub struct IndexInfo {
    pub name: String,
    pub unique: bool,
    pub keys: Vec<String>,
}

One index on a relation, with its key list in declared order (#1307).

Order is the whole point: an index on (status, pk_invoice) serves ORDER BY status, pk_invoice without a sort, while separate indexes on status and on pk_invoice leave an incremental sort on every page. The flat column set get_indexed_columns returns cannot tell those two apart — it reports {pk_invoice, status} for both, which is why #1307 could not be built on it.

Fields

name: String

The index’s own relation name.

unique: bool

Whether the index is unique.

keys: Vec<String>

Key definitions in declared order. A key is a bare column name (status) or an expression as Postgres renders it ((data ->> 'id'::text)), so an expression index is visible rather than silently dropped.

Trait Implementations

impl Clone for IndexInfo

fn clone(&self) -> IndexInfo

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexInfo

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

Formats the value using the given formatter.

impl Eq for IndexInfo

impl PartialEq for IndexInfo

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for IndexInfo