Enum datafusion_sql::unparser::dialect::IntervalStyle

pub enum IntervalStyle {
    PostgresVerbose,
    SQLStandard,
    MySQL,
}

Expand description

IntervalStyle to use for unparsing

https://www.postgresql.org/docs/current/datatype-datetime.html#DATATYPE-INTERVAL-INPUT different DBMS follows different standards, popular ones are: postgres_verbose: ‘2 years 15 months 100 weeks 99 hours 123456789 milliseconds’ which is compatible with arrow display format, as well as duckdb sql standard format is ‘1-2’ for year-month, or ‘1 10:10:10.123456’ for day-time https://www.contrib.andrew.cmu.edu/~shadow/sql/sql1992.txt

Variants§

PostgresVerbose

SQLStandard

MySQL

Trait Implementations§

impl Clone for IntervalStyle

fn clone(&self) -> IntervalStyle

Returns a copy of the value. Read more

1.0.0 · source§

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

Performs copy-assignment from source. Read more

impl Copy for IntervalStyle

Auto Trait Implementations§

impl Freeze for IntervalStyle

impl RefUnwindSafe for IntervalStyle

impl Send for IntervalStyle

impl Sync for IntervalStyle

impl Unpin for IntervalStyle

impl UnwindSafe for IntervalStyle

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,

default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. Read more

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

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. 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<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,