Enum ColumnDefault 

pub enum ColumnDefault {
    CurrentTimestamp,
    Null,
    Integer(i64),
    Float(f64),
    Text(String),
}

Safe values allowed for a column DEFAULT clause.

Accepting a raw &str would allow DDL injection through the DEFAULT position. This enum restricts callers to known-safe literals.

Variants

CurrentTimestamp

CURRENT_TIMESTAMP — standard SQL timestamp literal.

Null

NULL — explicit SQL null default.

Integer(i64)

A non-negative integer literal (e.g. 0, 1).

Float(f64)

A non-negative real literal (e.g. 0.0).

Text(String)

A string literal that will be single-quoted and escaped. Only printable ASCII excluding ' and \ is accepted.

Implementations

impl ColumnDefault

pub fn to_sql(&self) -> String

Renders the default value as a safe SQL fragment.

Trait Implementations

impl Clone for ColumnDefault

fn clone(&self) -> ColumnDefault

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnDefault

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

Formats the value using the given formatter.

impl PartialEq for ColumnDefault

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