Struct Function

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pub struct Function<'a> { /* private fields */ }
Expand description

A database function definition

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impl<'a> Function<'a>

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pub fn returns_json(&self) -> bool

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impl<'a> Aliasable<'a> for Function<'a>

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type Target = Function<'a>

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fn alias<T>(self, alias: T) -> Self::Target
where T: Into<Cow<'a, str>>,

Alias table for usage elsewhere in the query.
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impl<'a> Clone for Function<'a>

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fn clone(&self) -> Function<'a>

Returns a copy 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<'a> Debug for Function<'a>

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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<'a> From<AggregateToString<'a>> for Function<'a>

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fn from(value: AggregateToString<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Average<'a>> for Function<'a>

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fn from(value: Average<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Coalesce<'a>> for Function<'a>

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fn from(value: Coalesce<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Concat<'a>> for Function<'a>

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fn from(value: Concat<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Count<'a>> for Function<'a>

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fn from(value: Count<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Encode<'a>> for Function<'a>

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fn from(value: Encode<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Function<'a>> for Expression<'a>

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fn from(f: Function<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<JsonAgg<'a>> for Function<'a>

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fn from(value: JsonAgg<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<JsonBuildObject<'a>> for Function<'a>

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fn from(value: JsonBuildObject<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<JsonExtract<'a>> for Function<'a>

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fn from(value: JsonExtract<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<JsonUnquote<'a>> for Function<'a>

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fn from(value: JsonUnquote<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Lower<'a>> for Function<'a>

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fn from(value: Lower<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Maximum<'a>> for Function<'a>

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fn from(value: Maximum<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Minimum<'a>> for Function<'a>

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fn from(value: Minimum<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<RowToJson<'a>> for Function<'a>

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fn from(value: RowToJson<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Sum<'a>> for Function<'a>

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fn from(value: Sum<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<ToJsonb<'a>> for Function<'a>

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fn from(value: ToJsonb<'a>) -> Self

Converts to this type from the input type.
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impl<'a> From<Upper<'a>> for Function<'a>

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fn from(value: Upper<'a>) -> Self

Converts to this type from the input type.
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impl<'a> IntoGroupByDefinition<'a> for Function<'a>

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impl<'a> PartialEq for Function<'a>

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fn eq(&self, other: &Function<'a>) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl<'a> StructuralPartialEq for Function<'a>

Auto Trait Implementations§

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impl<'a> Freeze for Function<'a>

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impl<'a> RefUnwindSafe for Function<'a>

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impl<'a> Send for Function<'a>

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impl<'a> Sync for Function<'a>

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impl<'a> Unpin for Function<'a>

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impl<'a> UnwindSafe for Function<'a>

Blanket Implementations§

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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<'a, T> Conjunctive<'a> for T
where T: Into<Expression<'a>>,

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fn and<E>(self, other: E) -> ConditionTree<'a>
where E: Into<Expression<'a>>,

Builds an AND condition having self as the left leaf and other as the right.
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fn or<E>(self, other: E) -> ConditionTree<'a>
where E: Into<Expression<'a>>,

Builds an OR condition having self as the left leaf and other as the right.
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fn not(self) -> ConditionTree<'a>

Builds a NOT condition having self as the condition.
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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<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.