Enum JoinPushDown 

pub enum JoinPushDown {
    Disallow,
    AllowedFor(String),
}

Controls whether join pushdown is allowed, and under what conditions

Mainly here to provider future interop with [datafusion-table-providers]

Variants

Disallow

This connection pool should not allow join push down. (i.e. we don’t know under what conditions it is safe to send a join query to the database)

AllowedFor(String)

Allows join push down for other tables that share the same context.

The context can be part of the connection string that uniquely identifies the server.

Trait Implementations

impl Clone for JoinPushDown

fn clone(&self) -> JoinPushDown

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinPushDown

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

Formats the value using the given formatter.

impl Hash for JoinPushDown

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 JoinPushDown

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

impl StructuralPartialEq for JoinPushDown