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HavingOperator

drive::query::having

Enum HavingOperator 

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pub enum HavingOperator {
    Equal,
    NotEqual,
    GreaterThan,
    GreaterThanOrEquals,
    LessThan,
    LessThanOrEquals,
    Between,
    BetweenExcludeBounds,
    BetweenExcludeLeft,
    BetweenExcludeRight,
    In,
}
Expand description

Comparison operator for a HavingClause. Mirrors crate::query::WhereOperator minus STARTS_WITH (prefix matching has no natural meaning against a scalar aggregate result, even a string-typed one). BETWEEN* operand semantics match WhereOperator: a 2-element list [lower, upper]; IN expects a list of candidate values (or a cross-group ranking set via HavingRightOperand::Ranking).

Variants§

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Equal

aggregate = value.

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NotEqual

aggregate != value.

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GreaterThan

aggregate > value.

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GreaterThanOrEquals

aggregate >= value.

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LessThan

aggregate < value.

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LessThanOrEquals

aggregate <= value.

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Between

aggregate BETWEEN lower AND upper (inclusive on both ends). value must be a 2-element list [lower, upper].

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BetweenExcludeBounds

aggregate > lower AND aggregate < upper (exclusive on both ends). value shape same as Between.

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BetweenExcludeLeft

aggregate > lower AND aggregate <= upper (exclusive on the left bound only). value shape same as Between.

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BetweenExcludeRight

aggregate >= lower AND aggregate < upper (exclusive on the right bound only). value shape same as Between.

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In

aggregate IN (v1, v2, …). value must be a list of candidate values matching the aggregate’s result type.

Trait Implementations§

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impl Clone for HavingOperator

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fn clone(&self) -> HavingOperator

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 Debug for HavingOperator

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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<'de> Deserialize<'de> for HavingOperator

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fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
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impl PartialEq for HavingOperator

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fn eq(&self, other: &HavingOperator) -> 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 Serialize for HavingOperator

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl Copy for HavingOperator

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impl Eq for HavingOperator

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impl StructuralPartialEq for HavingOperator

Auto Trait 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<T> Conv for T

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fn conv<T>(self) -> T
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Converts self into T using Into<T>. Read more
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impl<T> CostsExt for T

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fn wrap_with_cost(self, cost: OperationCost) -> CostContext<Self>
where Self: Sized,

Wraps any value into a CostContext object with provided costs.
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fn wrap_fn_cost( self, f: impl FnOnce(&Self) -> OperationCost, ) -> CostContext<Self>
where Self: Sized,

Wraps any value into CostContext object with costs computed using the value getting wrapped.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> FmtForward for T

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fn fmt_binary(self) -> FmtBinary<Self>
where Self: Binary,

Causes self to use its Binary implementation when Debug-formatted.
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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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fn fmt_lower_hex(self) -> FmtLowerHex<Self>
where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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fn fmt_octal(self) -> FmtOctal<Self>
where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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fn fmt_pointer(self) -> FmtPointer<Self>
where Self: Pointer,

Causes self to use its Pointer implementation when Debug-formatted.
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fn fmt_upper_exp(self) -> FmtUpperExp<Self>
where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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fn fmt_upper_hex(self) -> FmtUpperHex<Self>
where Self: UpperHex,

Causes self to use its UpperHex implementation when Debug-formatted.
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fn fmt_list(self) -> FmtList<Self>
where &'a Self: for<'a> IntoIterator,

Formats each item in a sequence. Read more
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fn from(t: T) -> T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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const ALIGN: usize

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