Enum TableConstraint 

pub enum TableConstraint {
    PrimaryKey {
        name: Option<String>,
        columns: Vec<String>,
    },
    Unique {
        name: Option<String>,
        columns: Vec<String>,
    },
}

v7.9.18 — table-level constraint at the end of a CREATE TABLE column list. Either a composite PRIMARY KEY or a UNIQUE (single- or multi-column).

Variants

PrimaryKey

PRIMARY KEY (col1, col2, ...). Implies NOT NULL on each referenced column. Engine builds a BTree index named <table>_pkey and enforces composite uniqueness on INSERT.

Fields

name: Option<String>

columns: Vec<String>

Unique

UNIQUE (col1, col2, ...). Engine builds a BTree index named <table>_<leading_col>_key (single-column) or <table>_<leading_col>_<…>_key (composite) and enforces uniqueness on INSERT.

Fields

name: Option<String>

columns: Vec<String>

Trait Implementations

impl Clone for TableConstraint

fn clone(&self) -> TableConstraint

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TableConstraint

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

Formats the value using the given formatter.

impl PartialEq for TableConstraint

fn eq(&self, other: &TableConstraint) -> 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 TableConstraint