Enum JoinType 

pub enum JoinType {
    Inner,
    Left,
    Right,
    Full,
    Cross,
    LeftSemi,
    LeftAnti,
}

Join algorithm / semantic type.

Variants

Inner

INNER JOIN — only matching rows.

Left

LEFT [OUTER] JOIN — all rows from the left side.

Right

RIGHT [OUTER] JOIN — all rows from the right side.

Full

FULL [OUTER] JOIN — all rows from both sides.

Cross

CROSS JOIN — cartesian product.

LeftSemi

Semi-join: return each left row that has at least one matching right row. Used internally by the decorrelation pass (e.g. EXISTS rewrites).

LeftAnti

Anti-join: return each left row that has no matching right row. Used internally by the decorrelation pass (e.g. NOT EXISTS rewrites).

Trait Implementations

impl Clone for JoinType

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinType

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

Formats the value using the given formatter.

impl Eq for JoinType

impl PartialEq for JoinType

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for JoinType