Struct JoinExpr 

pub struct JoinExpr {
    pub rhs: QueryExpr,
    pub col_lhs: ColId,
    pub col_rhs: ColId,
    pub inner: Option<Arc<Header>>,
}

Fields

rhs: QueryExpr

col_lhs: ColId

col_rhs: ColId

inner: Option<Arc<Header>>

If None, this is a left semi-join, returning rows only from the source table, using the rhs as a filter.

If Some(_), this is an inner join, returning the concatenation of the matching rows.

Implementations

impl JoinExpr

pub fn new( rhs: QueryExpr, col_lhs: ColId, col_rhs: ColId, inner: Option<Arc<Header>>, ) -> Self

Trait Implementations

impl Clone for JoinExpr

fn clone(&self) -> JoinExpr

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JoinExpr

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

Formats the value using the given formatter.

impl From<JoinExpr> for Query

fn from(original: JoinExpr) -> Query

Converts to this type from the input type.

impl Hash for JoinExpr

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 JoinExpr

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

impl StructuralPartialEq for JoinExpr