Struct datafusion::logical_plan::plan::Projection
source · [−]pub struct Projection {
pub expr: Vec<Expr>,
pub input: Arc<LogicalPlan>,
pub schema: DFSchemaRef,
pub alias: Option<String>,
}
Expand description
Evaluates an arbitrary list of expressions (essentially a SELECT with an expression list) on its input.
Fields
expr: Vec<Expr>
The list of expressions
input: Arc<LogicalPlan>
The incoming logical plan
schema: DFSchemaRef
The schema description of the output
alias: Option<String>
Projection output relation alias
Trait Implementations
sourceimpl Clone for Projection
impl Clone for Projection
sourcefn clone(&self) -> Projection
fn clone(&self) -> Projection
Returns a copy of the value. Read more
1.0.0 · sourcefn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from source
. Read more
Auto Trait Implementations
impl !RefUnwindSafe for Projection
impl Send for Projection
impl Sync for Projection
impl Unpin for Projection
impl !UnwindSafe for Projection
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcepub fn borrow_mut(&mut self) -> &mut T
pub fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
sourceimpl<T> ToOwned for T where
T: Clone,
impl<T> ToOwned for T where
T: Clone,
type Owned = T
type Owned = T
The resulting type after obtaining ownership.
sourcepub fn to_owned(&self) -> T
pub fn to_owned(&self) -> T
Creates owned data from borrowed data, usually by cloning. Read more
sourcepub fn clone_into(&self, target: &mut T)
pub fn clone_into(&self, target: &mut T)
🔬 This is a nightly-only experimental API. (
toowned_clone_into
)Uses borrowed data to replace owned data, usually by cloning. Read more