Skip to main content

ExtractedStatements

Struct ExtractedStatements 

Source
pub struct ExtractedStatements { /* private fields */ }
Expand description

A parsed batch of SQL statements, each preparable on demand. A parsed batch of SQL statements, each preparable on demand.

Produced by Connection::extract_statements. Owns the duckdb_extracted_statements handle and destroys it in Drop; it retains the connection it parsed against (Arc<ConnectionInner>) so a statement prepared from it cannot outlive that connection — the same ownership rule as CachedStatement.

Implementations§

Source§

impl ExtractedStatements

Source

pub fn len(&self) -> u64

The number of statements parsed from the query.

Source

pub fn is_empty(&self) -> bool

Returns true if no statements were parsed.

Always false in practice — a zero-statement extract is reported as an error at extraction time — but provided so the type satisfies the usual len/is_empty pairing.

Source

pub fn prepare(&self, index: u64) -> Result<CachedStatement>

Prepares the extracted statement at index (0-based), reusing the ordinary CachedStatement wrapper.

§Errors

Error::DuckDBFailure if index is out of range, or if DuckDB fails to prepare the statement.

Trait Implementations§

Source§

impl Debug for ExtractedStatements

Source§

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

Formats the value using the given formatter. Read more
Source§

impl Drop for ExtractedStatements

Source§

fn drop(&mut self)

Executes the destructor for this type. Read more
Source§

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)
Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned. Read more

Auto Trait Implementations§

Blanket Implementations§

Source§

impl<T> Any for T
where T: 'static + ?Sized,

Source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
Source§

impl<T> Borrow<T> for T
where T: ?Sized,

Source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

Source§

impl<T, U> Into<U> for T
where U: From<T>,

Source§

fn into(self) -> U

Calls U::from(self).

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

Source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

type Error = Infallible

The type returned in the event of a conversion error.
Source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.