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ColumnExpr

clicktype_query::expr

Struct ColumnExpr 

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pub struct ColumnExpr<C: TypedColumn> { /* private fields */ }
Expand description

Column expression

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impl<C: TypedColumn> ColumnExpr<C>

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pub fn new() -> Self

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impl<C: Clone + TypedColumn> Clone for ColumnExpr<C>

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fn clone(&self) -> ColumnExpr<C>

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl<C: Debug + TypedColumn> Debug for ColumnExpr<C>

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

Formats the value using the given formatter. Read more
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impl<C: TypedColumn> Expression for ColumnExpr<C>

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type Output = <C as TypedColumn>::Type

The output type of this expression
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fn render(&self) -> String

Render the expression to SQL
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fn is_aggregate(&self) -> bool

Whether this is an aggregate expression
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impl<C: Copy + TypedColumn> Copy for ColumnExpr<C>

Auto Trait Implementations§

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impl<C> Freeze for ColumnExpr<C>

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impl<C> RefUnwindSafe for ColumnExpr<C>
where C: RefUnwindSafe,

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impl<C> Send for ColumnExpr<C>

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impl<C> Sync for ColumnExpr<C>

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impl<C> Unpin for ColumnExpr<C>
where C: Unpin,

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impl<C> UnwindSafe for ColumnExpr<C>
where C: UnwindSafe,

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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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
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impl<E> Comparable for E
where E: Expression,

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fn eq<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Eq>
where R: Into<Literal<Self::Output>>,

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fn ne<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Ne>
where R: Into<Literal<Self::Output>>,

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fn lt<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Lt>
where R: Into<Literal<Self::Output>>,

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fn le<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Le>
where R: Into<Literal<Self::Output>>,

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fn gt<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Gt>
where R: Into<Literal<Self::Output>>,

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fn ge<R>(self, rhs: R) -> CompareExpr<Self, Literal<Self::Output>, Ge>
where R: Into<Literal<Self::Output>>,

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<E> Logical for E
where E: Expression<Output = bool>,

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fn and<R: Expression<Output = bool>>(self, rhs: R) -> AndExpr<Self, R>

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fn or<R: Expression<Output = bool>>(self, rhs: R) -> OrExpr<Self, R>

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fn not(self) -> NotExpr<Self>

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impl<E> NullOps for E
where E: Expression,

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fn is_null(self) -> IsNullExpr<Self>

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fn is_not_null(self) -> IsNotNullExpr<Self>

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impl<E> StringOps for E
where E: Expression<Output = String>,

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fn like(self, pattern: &str) -> LikeExpr<Self>

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fn ilike(self, pattern: &str) -> ILikeExpr<Self>

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.