Enum DefaultValueType 

pub enum DefaultValueType {
    None,
    Value(Value),
    Expression(Box<dyn Expression>),
}

Variants

None

Value(Value)

Expression(Box<dyn Expression>)

Implementations

impl DefaultValueType

pub fn is_set(&self) -> bool

Trait Implementations

impl Debug for DefaultValueType

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

Formats the value using the given formatter.

impl Default for DefaultValueType

fn default() -> DefaultValueType

Returns the “default value” for a type.

impl Expression for DefaultValueType

fn write_query( &self, writer: &dyn SqlWriter, context: &mut Context, out: &mut DynQuery, )

Serialize the expression into out using writer.

fn is_ordered(&self) -> bool

True if it encodes ordering.

fn is_true(&self) -> bool

True if it is an expression that simply evaluates to true

impl From<&'static str> for DefaultValueType

fn from(value: &'static str) -> DefaultValueType

Converts to this type from the input type.

impl From<Value> for DefaultValueType

fn from(value: Value) -> DefaultValueType

Converts to this type from the input type.

impl From<bool> for DefaultValueType

fn from(value: bool) -> DefaultValueType

Converts to this type from the input type.

impl From<i64> for DefaultValueType

fn from(value: i64) -> DefaultValueType

Converts to this type from the input type.

impl OpPrecedence for DefaultValueType

fn precedence(&self, writer: &dyn SqlWriter) -> i32

Lower numbers bind weaker, writers parenthesize when child precedence <= operator precedence.