Struct ColumnDef 

pub struct ColumnDef {
    pub name: String,
    pub ty: ColumnTypeName,
    pub nullable: bool,
    pub default: Option<Expr>,
    pub auto_increment: bool,
    pub is_primary_key: bool,
    pub is_unique: bool,
    pub check: Option<Expr>,
}

Fields

name: String

ty: ColumnTypeName

nullable: bool

default: Option<Expr>

DEFAULT <expr> literal supplied at CREATE TABLE. Engine evaluates this once (with an empty row) and caches the resulting Value on the column schema.

auto_increment: bool

MySQL-style AUTO_INCREMENT — the engine maintains a counter per such column and fills the slot when INSERT leaves it unbound (omitted from a column-list INSERT or explicitly NULL).

is_primary_key: bool

v7.9.13 — inline PRIMARY KEY column constraint. mailrs migration follow-up F1. Implies NOT NULL. Engine creates an implicit BTree index named <table>_pkey over this column at CREATE TABLE time, satisfying the parent-side index requirement for any FOREIGN KEY pointing at it.

is_unique: bool

v7.13.0 — inline UNIQUE column constraint (mailrs round-5 G2). The CREATE TABLE handler folds this into a single-column TableConstraint::Unique so the engine path stays uniform with table-level UNIQUE.

check: Option<Expr>

v7.13.0 — inline CHECK (<expr>) column constraint (mailrs round-5 G3). Stored alongside the column so the CREATE TABLE handler can fold these into table-level CHECK constraints. Multiple inline CHECKs on the same column are concatenated with AND at the table level.

Trait Implementations

impl Clone for ColumnDef

fn clone(&self) -> ColumnDef

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnDef

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

Formats the value using the given formatter.

impl Display for ColumnDef

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

Formats the value using the given formatter.

impl PartialEq for ColumnDef

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for ColumnDef