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PreparedStatement

featherdb_query

Struct PreparedStatement 

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pub struct PreparedStatement { /* private fields */ }
Expand description

A prepared statement with a cached, optimized query plan

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impl PreparedStatement

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pub fn new( sql: String, plan: LogicalPlan, param_types: Vec<Option<ColumnType>>, param_count: usize, id: u64, ) -> Self

Create a new prepared statement

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pub fn with_subquery_plans( sql: String, plan: LogicalPlan, param_types: Vec<Option<ColumnType>>, param_count: usize, id: u64, subquery_plans: HashMap<usize, LogicalPlan>, ) -> Self

Create a new prepared statement with subquery plans

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pub fn sql(&self) -> &str

Get the SQL string

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pub fn plan(&self) -> &LogicalPlan

Get the cached plan

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pub fn param_types(&self) -> &[Option<ColumnType>]

Get the expected parameter types

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pub fn param_count(&self) -> usize

Get the number of parameters

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pub fn id(&self) -> u64

Get the statement ID

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pub fn subquery_plans(&self) -> &HashMap<usize, LogicalPlan>

Get the subquery plans

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pub fn validate_params(&self, params: &[Value]) -> Result<()>

Validate that provided parameters match expected count

Trait Implementations§

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impl Clone for PreparedStatement

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fn clone(&self) -> PreparedStatement

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 PreparedStatement

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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<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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fn borrow(&self) -> &T

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

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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)
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where Self: Binary,

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fn fmt_display(self) -> FmtDisplay<Self>
where Self: Display,

Causes self to use its Display implementation when Debug-formatted.
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fn fmt_lower_exp(self) -> FmtLowerExp<Self>
where Self: LowerExp,

Causes self to use its LowerExp implementation when Debug-formatted.
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where Self: LowerHex,

Causes self to use its LowerHex implementation when Debug-formatted.
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where Self: Octal,

Causes self to use its Octal implementation when Debug-formatted.
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where Self: Pointer,

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where Self: UpperExp,

Causes self to use its UpperExp implementation when Debug-formatted.
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where Self: UpperHex,

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where &'a Self: for<'a> IntoIterator,

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impl<T> From<T> for T

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fn from(t: T) -> T

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Pipes by value. This is generally the method you want to use. Read more
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fn pipe_ref<'a, R>(&'a self, func: impl FnOnce(&'a Self) -> R) -> R
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Mutably borrows self and passes that borrow into the pipe function. Read more
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fn tap(self, func: impl FnOnce(&Self)) -> Self

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The resulting type after obtaining ownership.
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