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BoundDelete

Struct BoundDelete 

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pub struct BoundDelete {
    pub table: TableInfo,
    pub index_exprs: Vec<BoundIndexExprs>,
    pub index_hint: IndexChoice,
    pub source: usize,
    pub filter: Option<BoundExpr>,
    pub returning: Vec<BoundResultColumn>,
    pub order_by: Vec<BoundOrderTerm>,
    pub limit: Option<BoundExpr>,
    pub offset: Option<BoundExpr>,
    pub triggers: Vec<BoundTrigger>,
    pub view_rows: Option<Box<BoundSelect>>,
}
Expand description

A bound DELETE.

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§table: TableInfo

The table being written.

§index_exprs: Vec<BoundIndexExprs>

The expressions the table’s partial and expression indexes need.

A delete needs them too: an entry only comes out of a partial index if the row was in it, and a key the index computed has to be recomputed to be found.

§index_hint: IndexChoice

INDEXED BY or NOT INDEXED on the target, as on BoundUpdate.

§source: usize

The statement-wide number of the FROM term being written.

It used to be implicitly zero, because a DML statement had exactly one source. A trigger body is compiled into the statement that fires it, so its target takes the next number after the firing statement’s - and a compiler that assumed zero read the wrong cursor for every fire after the first.

§filter: Option<BoundExpr>

The WHERE clause.

§returning: Vec<BoundResultColumn>

The RETURNING columns.

§order_by: Vec<BoundOrderTerm>

The ORDER BY that decides which rows a LIMIT keeps.

Empty unless the statement wrote one, and then always with a LIMIT, because the binder refuses an order with nothing to limit. It goes onto the query that finds the rows to change, which is where SQLite puts it too: a limited write is WHERE rowid IN (SELECT rowid ... ORDER BY ... LIMIT ...) there.

§limit: Option<BoundExpr>

The LIMIT.

§offset: Option<BoundExpr>

The OFFSET.

§triggers: Vec<BoundTrigger>

The triggers this write fires, in schema order.

§view_rows: Option<Box<BoundSelect>>

The rows to fire an INSTEAD OF trigger for, when the target is a view.

Trait Implementations§

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impl Clone for BoundDelete

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fn clone(&self) -> Self

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 BoundDelete

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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 PartialEq for BoundDelete

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fn eq(&self, other: &Self) -> 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 BoundDelete

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 = !

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.