Struct IndexColumn 

pub struct IndexColumn {
    pub name: String,
    pub order: SortOrder,
    pub pos_in_table: usize,
    pub collation: Option<CollationSeq>,
    pub default: Option<Box<Expr>>,
    pub expr: Option<Box<Expr>>,
}

Fields

name: String

order: SortOrder

pos_in_table: usize

the position of the column in the source table. for example: CREATE TABLE t (a,b,c) CREATE INDEX idx ON t(b) b.pos_in_table == 1

collation: Option<CollationSeq>

default: Option<Box<Expr>>

expr: Option<Box<Expr>>

Expression for expression indexes. None for simple column indexes.

Trait Implementations

impl Clone for IndexColumn

fn clone(&self) -> IndexColumn

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexColumn

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

Formats the value using the given formatter.

impl TryClone for IndexColumn

type Error = Infallible

fn try_clone(&self) -> Result<Self, Self::Error>