Struct SQLNull 

pub struct SQLNull;

Explicit SQL NULL marker.

Trait Implementations

impl Clone for SQLNull

fn clone(&self) -> SQLNull

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SQLNull

impl Debug for SQLNull

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

Formats the value using the given formatter.

impl Default for SQLNull

fn default() -> SQLNull

Returns the “default value” for a type.

impl<'a, V: SQLParam + 'a> ToSQL<'a, V> for SQLNull

fn to_sql(&self) -> SQL<'a, V>

fn into_sql(self) -> SQL<'a, V>

where Self: Sized,

Consume self and return SQL without cloning. Default delegates to to_sql() (which clones). Types that own their SQL (like SQL and SQLExpr) override this to avoid the clone.