ColumnFlags

Struct ColumnFlags 

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pub struct ColumnFlags {
    pub nullable: bool,
    pub case_sensitive: bool,
    pub updateable: Updateable,
    pub identity: bool,
    pub computed: bool,
    pub fixed_len_clr_type: bool,
    pub sparse_column_set: bool,
    pub encrypted: bool,
    pub hidden: bool,
    pub key: bool,
    pub nullable_unknown: bool,
}
Expand description

Column flags from COLMETADATA.

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§nullable: bool

Column is nullable.

§case_sensitive: bool

Column allows case-sensitive comparison.

§updateable: Updateable

Column is updateable.

§identity: bool

Column is an identity column.

§computed: bool

Column is computed.

§fixed_len_clr_type: bool

Column has fixed-length CLR type.

§sparse_column_set: bool

Column is sparse.

§encrypted: bool

Column is encrypted (Always Encrypted).

§hidden: bool

Column is hidden.

§key: bool

Column is a key column.

§nullable_unknown: bool

Column is nullable but unknown at query time.

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impl ColumnFlags

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pub fn from_bits(flags: u16) -> Self

Parse column flags from the 2-byte flags field.

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pub fn to_bits(&self) -> u16

Convert flags back to bits.

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impl Clone for ColumnFlags

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fn clone(&self) -> ColumnFlags

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 ColumnFlags

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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 ColumnFlags

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fn default() -> ColumnFlags

Returns the “default value” for a type. Read more
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impl Copy for ColumnFlags

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, 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, 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.