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ColumnDef

Struct ColumnDef 

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pub struct ColumnDef {
    pub name: Ident,
    pub ty: ColumnType,
    pub not_null: bool,
    pub primary_key: bool,
    pub auto_increment: bool,
    pub unique: bool,
    pub default: Option<Expr>,
    pub check: Option<Expr>,
}
Expand description

A column definition.

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§name: Ident

The column name.

§ty: ColumnType

The logical type.

§not_null: bool

Whether NOT NULL is set.

§primary_key: bool

Whether the column is a single-column PRIMARY KEY.

§auto_increment: bool

Whether AUTOINCREMENT is set; requires an INTEGER PRIMARY KEY.

§unique: bool

Whether UNIQUE is set.

§default: Option<Expr>

The DEFAULT expr, inlined as a literal when rendered.

§check: Option<Expr>

The CHECK (expr) constraint.

Implementations§

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impl ColumnDef

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pub fn new(name: impl IntoIden, ty: ColumnType) -> ColumnDef

A nullable column of the given type.

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pub fn integer(name: impl IntoIden) -> ColumnDef

An INTEGER column.

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pub fn boolean(name: impl IntoIden) -> ColumnDef

An INTEGER column holding a boolean.

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pub fn real(name: impl IntoIden) -> ColumnDef

A REAL column.

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pub fn text(name: impl IntoIden) -> ColumnDef

A TEXT column.

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pub fn string(name: impl IntoIden, len: Option<u32>) -> ColumnDef

A TEXT column with an advisory length.

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pub fn blob(name: impl IntoIden) -> ColumnDef

A BLOB column.

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pub fn date(name: impl IntoIden) -> ColumnDef

A date column, stored as text.

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pub fn date_time(name: impl IntoIden) -> ColumnDef

A naive timestamp column, stored as text.

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pub fn timestamp_with_time_zone(name: impl IntoIden) -> ColumnDef

A zoned timestamp column, stored as RFC 3339 text.

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pub fn uuid(name: impl IntoIden) -> ColumnDef

A UUID column, stored as text.

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pub fn json(name: impl IntoIden) -> ColumnDef

A JSON column, stored as text.

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pub fn decimal(name: impl IntoIden) -> ColumnDef

A decimal column, stored as text.

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pub fn not_null(self) -> ColumnDef

Sets NOT NULL.

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pub fn null(self) -> ColumnDef

Makes the column nullable, which is the default.

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pub fn primary_key(self) -> ColumnDef

Sets PRIMARY KEY.

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pub fn auto_increment(self) -> ColumnDef

Sets AUTOINCREMENT.

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pub fn unique_key(self) -> ColumnDef

Sets UNIQUE.

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pub fn default(self, value: impl Into<Expr>) -> ColumnDef

Sets DEFAULT expr.

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pub fn check(self, expr: Expr) -> ColumnDef

Sets CHECK (expr).

Trait Implementations§

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impl Clone for ColumnDef

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fn clone(&self) -> ColumnDef

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
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impl Debug for ColumnDef

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

Formats the value using the given formatter. Read more
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impl PartialEq for ColumnDef

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for ColumnDef

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

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impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

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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> ErasedDestructor for T
where T: 'static,

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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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

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impl<T> Same for T

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type Output = T

Should always be Self
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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 = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

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<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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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