Enum datafusion_expr::var_provider::VarType

pub enum VarType {
    System,
    UserDefined,
}

Variable type, system/user defined

Variants

System

System variable, like @@version

UserDefined

User defined variable, like @name

Trait Implementations

impl Clone for VarType

fn clone(&self) -> VarType

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VarType

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

Formats the value using the given formatter.

impl Hash for VarType

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

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 VarType

fn eq(&self, other: &VarType) -> 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 VarType

impl StructuralPartialEq for VarType