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DateUnit

Enum DateUnit

pub enum DateUnit {
Show 24 variants    Microsecond,
    Millisecond,
    Second,
    Minute,
    Hour,
    Day,
    Week,
    Month,
    Quarter,
    Year,
    Decade,
    Century,
    Millennium,
    Julian,
    IsoYear,
    Dow,
    IsoDow,
    Doy,
    Timezone,
    TimezoneHour,
    TimezoneMinute,
    Epoch,
    Reserved,
    Unknown,
}

Expand description

A unit of EXTRACT, date_part and date_trunc.

Variants§

Microsecond

Millisecond

Second

Minute

Hour

Day

Week

Month

Quarter

Year

Decade

Century

Millennium

Julian

IsoYear

Dow

IsoDow

Doy

Timezone

TimezoneHour

TimezoneMinute

Epoch

The reserved word epoch.

Reserved

Another reserved word, for example now.

Unknown

A token of another type, or no token.

Implementations§

impl DateUnit

pub fn decode(lowunits: &str) -> DateUnit

DecodeUnits, and then DecodeSpecial when DecodeUnits finds no token. lowunits is in lower case.

pub fn decode_units(lowunits: &str) -> DateUnit

DecodeUnits alone, as date_trunc calls it. lowunits is in lower case.

pub fn is_units(self) -> bool

Whether the token has the type UNITS.

Trait Implementations§

impl Clone for DateUnit

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

impl Copy for DateUnit

impl Debug for DateUnit

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

Formats the value using the given formatter. Read more

impl Eq for DateUnit

impl PartialEq for DateUnit

fn eq(&self, other: &Self) -> bool

Equality operator ==. Read more

1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more

impl StructuralPartialEq for DateUnit

Auto Trait Implementations§

impl Freeze for DateUnit

impl RefUnwindSafe for DateUnit

impl Send for DateUnit

impl Sync for DateUnit

impl Unpin for DateUnit

impl UnsafeUnpin for DateUnit

impl UnwindSafe for DateUnit

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 = !

The type returned in the event of a conversion error.

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

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.