Enum NullableIndexExprResult 

pub enum NullableIndexExprResult {
    Exact(NullableRowAddrMask),
    AtMost(NullableRowAddrMask),
    AtLeast(NullableRowAddrMask),
}

Result of an index search before NULL rows are dropped. Carries three-valued-logic information via NullableRowAddrMask.

Variants

Exact(NullableRowAddrMask)

AtMost(NullableRowAddrMask)

AtLeast(NullableRowAddrMask)

Implementations

impl NullableIndexExprResult

pub fn drop_nulls(self) -> IndexExprResult

Project NULL rows out of the result.

Under a WHERE clause, NULL is treated as FALSE — so drop_nulls removes them from AllowLists (NULL rows are not selected) and folds them into BlockLists (NULL rows are still blocked).

Trait Implementations

impl BitAnd for NullableIndexExprResult

type Output = NullableIndexExprResult

The resulting type after applying the & operator.

fn bitand(self, rhs: Self) -> Self

Performs the & operation.

impl BitOr for NullableIndexExprResult

type Output = NullableIndexExprResult

The resulting type after applying the | operator.

fn bitor(self, rhs: Self) -> Self

Performs the | operation.

impl Debug for NullableIndexExprResult

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

Formats the value using the given formatter.

impl Not for NullableIndexExprResult

type Output = NullableIndexExprResult

The resulting type after applying the ! operator.

fn not(self) -> Self

Performs the unary ! operation.