Struct IndexJoin

pub struct IndexJoin {
    pub probe_side: QueryExpr,
    pub probe_col: ColId,
    pub index_side: SourceExpr,
    pub index_select: Option<ColumnOp>,
    pub index_col: ColId,
    pub return_index_rows: bool,
}

A descriptor for an index semi join operation.

The semantics are those of a semijoin with rows from the index or the probe side being returned.

Fields

probe_side: QueryExpr

probe_col: ColId

index_side: SourceExpr

index_select: Option<ColumnOp>

index_col: ColId

return_index_rows: bool

If true, returns rows from the index_side. Otherwise, returns rows from the probe_side.

Implementations

impl IndexJoin

pub fn reorder(self, row_count: impl Fn(TableId, &str) -> i64) -> Self

pub fn to_inner_join(self) -> QueryExpr

Trait Implementations

impl Clone for IndexJoin

fn clone(&self) -> IndexJoin

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IndexJoin

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

Formats the value using the given formatter.

impl From<IndexJoin> for Query

fn from(original: IndexJoin) -> Query

Converts to this type from the input type.

impl From<IndexJoin> for QueryExpr

fn from(join: IndexJoin) -> Self

Converts to this type from the input type.

impl Hash for IndexJoin

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 IndexJoin

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

impl StructuralPartialEq for IndexJoin