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ColumnValue

Struct ColumnValue 

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pub struct ColumnValue {
    pub type_code: TypeCode,
    pub data: Vec<u8>,
}
Expand description

A value from a column, stored as little-endian bytes with type information. Similar to C++ clickhouse-cpp’s ItemView but owned.

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§type_code: TypeCode

The ClickHouse type code for this value.

§data: Vec<u8>

The raw little-endian byte representation of the value.

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impl ColumnValue

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pub fn from_u8(value: u8) -> Self

Create a UInt8 value.

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pub fn from_u16(value: u16) -> Self

Create a UInt16 value.

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pub fn from_u32(value: u32) -> Self

Create a UInt32 value.

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pub fn from_u64(value: u64) -> Self

Create a UInt64 value.

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pub fn from_i8(value: i8) -> Self

Create an Int8 value.

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pub fn from_i16(value: i16) -> Self

Create an Int16 value.

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pub fn from_i32(value: i32) -> Self

Create an Int32 value.

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pub fn from_i64(value: i64) -> Self

Create an Int64 value.

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pub fn from_f32(value: f32) -> Self

Create a Float32 value.

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pub fn from_f64(value: f64) -> Self

Create a Float64 value.

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pub fn from_string(value: &str) -> Self

Create a String value.

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pub fn void() -> Self

Create a Void/NULL value with no data.

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pub fn as_string(&self) -> Result<&str>

Get as string (for String type)

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pub fn as_bytes(&self) -> &[u8]

Get raw bytes

Trait Implementations§

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impl Clone for ColumnValue

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fn clone(&self) -> ColumnValue

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 ColumnValue

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket 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> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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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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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more