[−][src]Trait diesel_geometry::expression_methods::PgSameAsExpressionMethods

pub trait PgSameAsExpressionMethods<ST>: Expression + Sized {
    fn same_as<T>(self, other: T) -> SameAs<Self, T::Expression>
    where
        T: AsExpression<ST>,
    { ... }
}

Provided methods

fn same_as<T>(self, other: T) -> SameAs<Self, T::Expression> where
    T: AsExpression<ST>, 

Creates a PostgresSQL ~= expression.

The "same as" operator, ~=, represents the usual notion of equality for the point, box, polygon, and circle types. Some of these types have an = operator, but = compares for equal areas only. The other scalar operators (<= and so on) likewise compare areas for these types.

Example

let found_drawing_id = shapes
    .select(drawing_id)
    .filter(centroid.same_as(PgPoint(1.0, 2.0)))
    .first(&connection);
assert_eq!(Ok(2), found_drawing_id);
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Implementors

impl<T: Expression<SqlType = Point>> PgSameAsExpressionMethods<Point> for T[src]

fn same_as<T>(self, other: T) -> SameAs<Self, T::Expression> where
    T: AsExpression<ST>, [src]

impl<T: Expression<SqlType = Box>> PgSameAsExpressionMethods<Box> for T[src]

fn same_as<T>(self, other: T) -> SameAs<Self, T::Expression> where
    T: AsExpression<ST>, [src]

impl<T: Expression<SqlType = Circle>> PgSameAsExpressionMethods<Circle> for T[src]

fn same_as<T>(self, other: T) -> SameAs<Self, T::Expression> where
    T: AsExpression<ST>, [src]

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