Struct agnes::join::Join

pub struct Join {
    pub kind: JoinKind,
    pub predicate: Predicate,
    // some fields omitted
}

Join information used to describe the type of join being used.

Fields

kind: JoinKind

Join kind: Inner, Outer, or Cross

predicate: Predicate

Join predicate: equijoin, inequality join

Methods

impl Join

pub fn new<L: Into<FieldIdent>, R: Into<FieldIdent>>(
    kind: JoinKind,
    predicate: Predicate,
    left_field: L,
    right_field: R
) -> Join

Create a new Join over the specified fields.

pub fn equal<L: Into<FieldIdent>, R: Into<FieldIdent>>(
    kind: JoinKind,
    left_field: L,
    right_field: R
) -> Join

Helper function to create a new Join with an 'Equal' predicate.

pub fn less_than<L: Into<FieldIdent>, R: Into<FieldIdent>>(
    kind: JoinKind,
    left_field: L,
    right_field: R
) -> Join

Helper function to create a new Join with an 'Less Than' predicate.

pub fn less_than_equal<L: Into<FieldIdent>, R: Into<FieldIdent>>(
    kind: JoinKind,
    left_field: L,
    right_field: R
) -> Join

Helper function to create a new Join with an 'Less Than or Equal' predicate.

pub fn greater_than<L: Into<FieldIdent>, R: Into<FieldIdent>>(
    kind: JoinKind,
    left_field: L,
    right_field: R
) -> Join

Helper function to create a new Join with an 'Greater Than' predicate.

pub fn greater_than_equal<L: Into<FieldIdent>, R: Into<FieldIdent>>(
    kind: JoinKind,
    left_field: L,
    right_field: R
) -> Join

Helper function to create a new Join with an 'Greater Than or Equal' predicate.

Trait Implementations

impl Debug for Join

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Join

fn clone(&self) -> Join

Returns a copy of the value.

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

Performs copy-assignment from source.