Struct PreparedStatement 

pub struct PreparedStatement { /* private fields */ }

A prepared statement for parameterized query execution.

PreparedStatement stores the server-side statement handle and parameter values. Execution is performed by Connection, not by PreparedStatement itself.

Example

Implementations

impl PreparedStatement

pub fn parameter_count(&self) -> usize

Get the number of parameters in this prepared statement.

pub fn parameter_types(&self) -> &[DataType]

Get the parameter types (if available from server).

pub fn handle(&self) -> i32

Get the statement handle ID.

pub fn is_closed(&self) -> bool

Check if the prepared statement has been closed.

pub fn bind( &mut self, index: usize, value: impl Into<Parameter>, ) -> Result<(), QueryError>

Bind a parameter value at the given index.

Arguments

• index - Zero-based parameter index
• value - Value to bind (must implement Into)

Errors

Returns QueryError::ParameterBindingError if index is out of bounds.

pub fn clear_parameters(&mut self)

Clear all bound parameters.

pub fn parameters(&self) -> &[Option<Parameter>]

Get bound parameters.

pub fn build_parameters_data( &self, ) -> Result<Option<Vec<Vec<Value>>>, QueryError>

Build parameters data in column-major format for the protocol.

This is used internally by Connection when executing prepared statements.

Trait Implementations

impl Debug for PreparedStatement

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

Formats the value using the given formatter.

impl Drop for PreparedStatement

fn drop(&mut self)

Executes the destructor for this type.