Enum datafusion::logical_expr::Statement

pub enum Statement {
    TransactionStart(TransactionStart),
    TransactionEnd(TransactionEnd),
    SetVariable(SetVariable),
}

Various types of Statements.

Transactions:

While DataFusion does not offer support transactions, it provides LogicalPlan support to assist building database systems using DataFusion

Variants

TransactionStart(TransactionStart)

TransactionEnd(TransactionEnd)

SetVariable(SetVariable)

Set a Variable

Implementations

impl Statement

pub fn schema(&self) -> &Arc<DFSchema>

Get a reference to the logical plan’s schema

pub fn name(&self) -> &str

Return a descriptive string describing the type of this Statement

pub fn display(&self) -> impl Display

Return a formatable structure with the a human readable description of this LogicalPlan node per node, not including children.

See crate::LogicalPlan::display for an example

Trait Implementations

impl Clone for Statement

fn clone(&self) -> Statement

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Statement

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

Formats the value using the given formatter.

impl Hash for Statement

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 Statement

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Eq for Statement

impl StructuralPartialEq for Statement