Enum MapKeyDedupPolicy 

pub enum MapKeyDedupPolicy {
    Exception,
    LastWin,
}

Policy for handling duplicate keys in Spark-compatible map-construction functions (map_from_arrays, map_from_entries, str_to_map). Mirrors Spark’s spark.sql.mapKeyDedupPolicy.

Variants

Exception

Raise [DUPLICATED_MAP_KEY] at runtime on any duplicate key.

LastWin

Keep the last occurrence of each duplicate key.

Trait Implementations

impl Clone for MapKeyDedupPolicy

fn clone(&self) -> MapKeyDedupPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl ConfigField for MapKeyDedupPolicy

fn visit<V>(&self, v: &mut V, key: &str, description: &'static str)

where V: Visit,

fn set(&mut self, _: &str, value: &str) -> Result<(), DataFusionError>

fn reset(&mut self, key: &str) -> Result<(), DataFusionError>

impl Copy for MapKeyDedupPolicy

impl Debug for MapKeyDedupPolicy

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

Formats the value using the given formatter.

impl Default for MapKeyDedupPolicy

fn default() -> MapKeyDedupPolicy

Returns the “default value” for a type.

impl Display for MapKeyDedupPolicy

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

Formats the value using the given formatter.

impl Eq for MapKeyDedupPolicy

impl FromStr for MapKeyDedupPolicy

type Err = DataFusionError

The associated error which can be returned from parsing.

fn from_str( s: &str, ) -> Result<MapKeyDedupPolicy, <MapKeyDedupPolicy as FromStr>::Err>

Parses a string s to return a value of this type.

impl PartialEq for MapKeyDedupPolicy

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MapKeyDedupPolicy