Struct datafusion::logical_expr::Prepare

pub struct Prepare {
    pub name: String,
    pub data_types: Vec<DataType>,
    pub input: Arc<LogicalPlan>,
}

Prepare a statement but do not execute it. Prepare statements can have 0 or more Expr::Placeholder expressions that are filled in during execution

Fields

name: String

The name of the statement

data_types: Vec<DataType>

Data types of the parameters (Expr::Placeholder)

input: Arc<LogicalPlan>

The logical plan of the statements

Trait Implementations

impl Clone for Prepare

fn clone(&self) -> Prepare

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Hash for Prepare

fn hash<__H>(&self, state: &mut __H)where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Prepare

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for Prepare

impl StructuralEq for Prepare

impl StructuralPartialEq for Prepare