arrow_flight::sql

Enum SqlNullOrdering

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#[repr(i32)]
pub enum SqlNullOrdering { SqlNullsSortedHigh = 0, SqlNullsSortedLow = 1, SqlNullsSortedAtStart = 2, SqlNullsSortedAtEnd = 3, }

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SqlNullsSortedHigh = 0

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SqlNullsSortedLow = 1

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SqlNullsSortedAtStart = 2

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SqlNullsSortedAtEnd = 3

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impl SqlNullOrdering

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pub fn is_valid(value: i32) -> bool

Returns true if value is a variant of SqlNullOrdering.

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pub fn from_i32(value: i32) -> Option<SqlNullOrdering>

👎Deprecated: Use the TryFrom<i32> implementation instead

Converts an i32 to a SqlNullOrdering, or None if value is not a valid variant.

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impl SqlNullOrdering

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pub fn as_str_name(&self) -> &'static str

String value of the enum field names used in the ProtoBuf definition.

The values are not transformed in any way and thus are considered stable (if the ProtoBuf definition does not change) and safe for programmatic use.

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pub fn from_str_name(value: &str) -> Option<Self>

Creates an enum from field names used in the ProtoBuf definition.

Trait Implementations§

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impl Clone for SqlNullOrdering

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fn clone(&self) -> SqlNullOrdering

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 Debug for SqlNullOrdering

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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 Default for SqlNullOrdering

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fn default() -> SqlNullOrdering

Returns the “default value” for a type. Read more
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impl From<SqlNullOrdering> for i32

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fn from(value: SqlNullOrdering) -> i32

Converts to this type from the input type.
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impl Hash for SqlNullOrdering

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl Ord for SqlNullOrdering

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fn cmp(&self, other: &SqlNullOrdering) -> Ordering

This method returns an Ordering between self and other. Read more
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fn max(self, other: Self) -> Self
where Self: Sized,

Compares and returns the maximum of two values. Read more
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fn min(self, other: Self) -> Self
where Self: Sized,

Compares and returns the minimum of two values. Read more
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fn clamp(self, min: Self, max: Self) -> Self
where Self: Sized,

Restrict a value to a certain interval. Read more
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impl PartialEq for SqlNullOrdering

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fn eq(&self, other: &SqlNullOrdering) -> 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 PartialOrd for SqlNullOrdering

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fn partial_cmp(&self, other: &SqlNullOrdering) -> Option<Ordering>

This method returns an ordering between self and other values if one exists. Read more
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fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator. Read more
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fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator. Read more
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fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator. Read more
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fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator. Read more
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impl TryFrom<i32> for SqlNullOrdering

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type Error = UnknownEnumValue

The type returned in the event of a conversion error.
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fn try_from(value: i32) -> Result<SqlNullOrdering, UnknownEnumValue>

Performs the conversion.
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impl Copy for SqlNullOrdering

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impl Eq for SqlNullOrdering

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impl StructuralPartialEq for SqlNullOrdering

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, dst: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<Q, K> Comparable<K> for Q
where Q: Ord + ?Sized, K: Borrow<Q> + ?Sized,

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fn compare(&self, key: &K) -> Ordering

Compare self to key and return their ordering.
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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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn from_ref(input: &T) -> T

Converts to this type from a reference to the input type.
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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided [Span], returning an Instrumented wrapper. Read more
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where U: From<T>,

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where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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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

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Performs the conversion.
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where S: Into<Dispatch>,

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