[−][src]Enum datafusion::logicalplan::Expr
Relation Expression
Variants
Column(usize)
index into a value within the row or complex value
Literal(ScalarValue)
literal value
BinaryExpr
binary expression e.g. "age > 21"
Fields of BinaryExpr
IsNotNull(Rc<Expr>)
unary IS NOT NULL
IsNull(Rc<Expr>)
unary IS NULL
Cast
cast a value to a different type
Fields of Cast
Sort
sort expression
Fields of Sort
ScalarFunction
scalar function
Fields of ScalarFunction
AggregateFunction
aggregate function
Fields of AggregateFunction
Methods
impl Expr
[src]
impl Expr
pub fn get_type(&self, schema: &Schema) -> DataType
[src]
pub fn get_type(&self, schema: &Schema) -> DataType
pub fn cast_to(
&self,
cast_to_type: &DataType,
schema: &Schema
) -> Result<Expr, String>
[src]
pub fn cast_to(
&self,
cast_to_type: &DataType,
schema: &Schema
) -> Result<Expr, String>
pub fn eq(&self, other: &Expr) -> Expr
[src]
pub fn eq(&self, other: &Expr) -> Expr
pub fn not_eq(&self, other: &Expr) -> Expr
[src]
pub fn not_eq(&self, other: &Expr) -> Expr
pub fn gt(&self, other: &Expr) -> Expr
[src]
pub fn gt(&self, other: &Expr) -> Expr
pub fn gt_eq(&self, other: &Expr) -> Expr
[src]
pub fn gt_eq(&self, other: &Expr) -> Expr
pub fn lt(&self, other: &Expr) -> Expr
[src]
pub fn lt(&self, other: &Expr) -> Expr
pub fn lt_eq(&self, other: &Expr) -> Expr
[src]
pub fn lt_eq(&self, other: &Expr) -> Expr
Trait Implementations
impl PartialEq<Expr> for Expr
[src]
impl PartialEq<Expr> for Expr
impl Clone for Expr
[src]
impl Clone for Expr
fn clone(&self) -> Expr
[src]
fn clone(&self) -> Expr
fn clone_from(&mut self, source: &Self)
1.0.0[src]
fn clone_from(&mut self, source: &Self)
1.0.0
[src]Performs copy-assignment from source
. Read more
impl Debug for Expr
[src]
impl Debug for Expr
impl<'de> Deserialize<'de> for Expr
[src]
impl<'de> Deserialize<'de> for Expr
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
[src]
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
__D: Deserializer<'de>,
impl Serialize for Expr
[src]
impl Serialize for Expr
Auto Trait Implementations
Blanket Implementations
impl<T> From for T
[src]
impl<T> From for T
impl<T, U> Into for T where
U: From<T>,
[src]
impl<T, U> Into for T where
U: From<T>,
impl<T> ToOwned for T where
T: Clone,
[src]
impl<T> ToOwned for T where
T: Clone,
impl<T, U> TryFrom for T where
T: From<U>,
[src]
impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
[src]
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
impl<T> Borrow for T where
T: ?Sized,
[src]
impl<T> Borrow for T where
T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
[src]
impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
[src]
fn get_type_id(&self) -> TypeId
impl<T> BorrowMut for T where
T: ?Sized,
[src]
impl<T> BorrowMut for T where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
[src]
fn borrow_mut(&mut self) -> &mut T
impl<T, U> TryInto for T where
U: TryFrom<T>,
[src]
impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
[src]
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
impl<T> DeserializeOwned for T where
T: Deserialize<'de>,
[src]
impl<T> DeserializeOwned for T where
T: Deserialize<'de>,