Enum PostgresUpdateValue 

pub enum PostgresUpdateValue<'a, V: SQLParam, T> {
    Skip,
    Null,
    Value(ValueWrapper<'a, V, T>),
}

Represents a value for UPDATE operations that can be skipped, null, or a SQL expression.

Variants

Skip

Don’t include this column in the SET clause

Null

Explicitly set column = NULL

Value(ValueWrapper<'a, V, T>)

Set column to a SQL expression (value, placeholder, etc.)

Implementations

impl<V: SQLParam, T> PostgresUpdateValue<'_, V, T>

pub const fn is_skip(&self) -> bool

Returns true if this is Skip

Trait Implementations

impl<'a, V: Clone + SQLParam, T: Clone> Clone for PostgresUpdateValue<'a, V, T>

fn clone(&self) -> PostgresUpdateValue<'a, V, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, V: Debug + SQLParam, T: Debug> Debug for PostgresUpdateValue<'a, V, T>

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

Formats the value using the given formatter.

impl<'a, V: SQLParam, T> Default for PostgresUpdateValue<'a, V, T>

fn default() -> PostgresUpdateValue<'a, V, T>

Returns the “default value” for a type.

impl<'a> From<&str> for PostgresUpdateValue<'a, PostgresValue<'a>, String>

fn from(value: &str) -> Self

Converts to this type from the input type.

impl<'a, C, T> From<Excluded<C>> for PostgresUpdateValue<'a, PostgresValue<'a>, T>

where C: SQLColumnInfo,

fn from(excluded: Excluded<C>) -> Self

Converts to this type from the input type.

impl<'a, T> From<Placeholder> for PostgresUpdateValue<'a, PostgresValue<'a>, T>

fn from(placeholder: Placeholder) -> Self

Converts to this type from the input type.

impl<'a, T> From<T> for PostgresUpdateValue<'a, PostgresValue<'a>, T>

where T: TryInto<PostgresValue<'a>>,

fn from(value: T) -> Self

Converts to this type from the input type.

impl<'a, M: DataType, N: Nullability, T> From<TypedPlaceholder<M, N>> for PostgresUpdateValue<'a, PostgresValue<'a>, T>

fn from(typed: TypedPlaceholder<M, N>) -> Self

Converts to this type from the input type.