Skip to main content

Column

Struct Column 

Source
pub struct Column<A, T> { /* private fields */ }

Implementations§

Source§

impl<A, T> Column<A, T>

Source

pub const fn new(field: &'static str) -> Self

Source

pub const fn name(self) -> &'static str

Source§

impl<A: Aggregate, T: Cast> Column<A, T>

Source

pub fn eq(self, value: T) -> Condition<A>

None matches the rows where the value is null.

Source

pub fn ne(self, value: T) -> Condition<A>

Also matches the rows holding a null where value does not, as a nullable value’s.

Source

pub fn in_(self, values: impl IntoIterator<Item = T>) -> Condition<A>

An empty list matches nothing; None matches the null rows, as in eq.

Source

pub fn like(self, pattern: &str) -> Condition<A>

Source

pub fn asc(self) -> Sort<A>

Source

pub fn desc(self) -> Sort<A>

Source§

impl<A: Aggregate, T: Ordered> Column<A, T>

Of a nullable value, a null row never matches: give is_null its own condition to keep them.

Source

pub fn gt(self, value: impl Into<T>) -> Condition<A>

Source

pub fn gte(self, value: impl Into<T>) -> Condition<A>

Source

pub fn lt(self, value: impl Into<T>) -> Condition<A>

Source

pub fn lte(self, value: impl Into<T>) -> Condition<A>

Source

pub fn between(self, low: impl Into<T>, high: impl Into<T>) -> Condition<A>

Both ends included.

Source§

impl<A: Aggregate, T: Cast> Column<A, Option<T>>

Source

pub fn is_null(self) -> Condition<A>

Source

pub fn is_not_null(self) -> Condition<A>

Trait Implementations§

Source§

impl<A, T> Clone for Column<A, T>

Source§

fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
Source§

impl<A, T> Copy for Column<A, T>

Auto Trait Implementations§

§

impl<A, T> Freeze for Column<A, T>
where PhantomData<fn() -> (A, T)>: Freeze,

§

impl<A, T> RefUnwindSafe for Column<A, T>

§

impl<A, T> Send for Column<A, T>
where PhantomData<fn() -> (A, T)>: Send,

§

impl<A, T> Sync for Column<A, T>
where PhantomData<fn() -> (A, T)>: Sync,

§

impl<A, T> Unpin for Column<A, T>
where PhantomData<fn() -> (A, T)>: Unpin,

§

impl<A, T> UnsafeUnpin for Column<A, T>

§

impl<A, T> UnwindSafe for Column<A, T>

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T> Instrument for T

Source§

fn instrument(self, span: Span) -> Instrumented<Self> ⓘ

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
Source§

fn in_current_span(self) -> Instrumented<Self> ⓘ

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = !

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, !>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

impl<T> WithSubscriber for T

Source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self> ⓘ
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
Source§

fn with_current_subscriber(self) -> WithDispatch<Self> ⓘ

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more