AggregateKind

Enum AggregateKind

pub enum AggregateKind {
    Count {
        field_id: Option<FieldId>,
        distinct: bool,
    },
    Sum {
        field_id: FieldId,
        data_type: DataType,
        distinct: bool,
    },
    Total {
        field_id: FieldId,
        data_type: DataType,
        distinct: bool,
    },
    Avg {
        field_id: FieldId,
        data_type: DataType,
        distinct: bool,
    },
    Min {
        field_id: FieldId,
        data_type: DataType,
    },
    Max {
        field_id: FieldId,
        data_type: DataType,
    },
    CountNulls {
        field_id: FieldId,
    },
    GroupConcat {
        field_id: FieldId,
        distinct: bool,
        separator: String,
    },
}

Expand description

Type of aggregate operation.

Variants§

Count

Fields

§field_id: Option<FieldId>

§distinct: bool

Sum

Fields

§field_id: FieldId

§data_type: DataType

§distinct: bool

Total

Fields

§field_id: FieldId

§data_type: DataType

§distinct: bool

Avg

Fields

§field_id: FieldId

§data_type: DataType

§distinct: bool

Min

Fields

§field_id: FieldId

§data_type: DataType

Max

Fields

§field_id: FieldId

§data_type: DataType

CountNulls

Fields

§field_id: FieldId

GroupConcat

Fields

§field_id: FieldId

§distinct: bool

§separator: String

Implementations§

impl AggregateKind

pub fn field_id(&self) -> Option<FieldId>

Returns the field ID referenced by this aggregate, if any.

Trait Implementations§

impl Clone for AggregateKind

fn clone(&self) -> AggregateKind

Returns a duplicate of the value. Read more

1.0.0 · Source§

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

Performs copy-assignment from source. Read more

Auto Trait Implementations§

impl Freeze for AggregateKind

impl RefUnwindSafe for AggregateKind

impl Send for AggregateKind

impl Sync for AggregateKind

impl Unpin for AggregateKind

impl UnwindSafe for AggregateKind

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

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

Mutably borrows from an owned value. Read more

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

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

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

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

fn into(self) -> U

Calls U::from(self).

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

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

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

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

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

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

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

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

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

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

The type returned in the event of a conversion error.

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

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,