Trait diesel::expression::Expression

pub trait Expression {
    type SqlType;
}

Represents a typed fragment of SQL.

Apps should not need to implement this type directly, but it may be common to use this in where clauses. Libraries should consider using diesel_infix_operator! or diesel_postfix_operator! instead of implementing this directly.

Associated Types

type SqlType

Implementors

• impl<T: Expression> Expression for Max<T> where
    T::SqlType: IntoNullable, 
• impl<T: Expression> Expression for Min<T> where
    T::SqlType: IntoNullable, 
• impl<ST, T> Expression for Sum<T> where
    ST: Foldable,
    T: Expression<SqlType = ST>, 
• impl<ST, T> Expression for Avg<T> where
    ST: Foldable,
    T: Expression<SqlType = ST>, 
• impl Expression for now
• impl<Expr> Expression for IsNull<Expr> where
    Expr: Expression, 
• impl<Expr> Expression for IsNotNull<Expr> where
    Expr: Expression, 
• impl<Expr> Expression for Asc<Expr> where
    Expr: Expression, 
• impl<Expr> Expression for Desc<Expr> where
    Expr: Expression, 
• impl<ST> Expression for SqlLiteral<ST>
• impl<T: Expression + ?Sized> Expression for Box<T>
• impl<'a, T: Expression + ?Sized> Expression for &'a T
• impl<A: Expression + NonAggregate> Expression for (A,)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate> Expression for (A, B)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate> Expression for (A, B, C)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate> Expression for (A, B, C, D)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate> Expression for (A, B, C, D, E)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate> Expression for (A, B, C, D, E, F)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate, J: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I, J)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate, J: Expression + NonAggregate, K: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I, J, K)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate, J: Expression + NonAggregate, K: Expression + NonAggregate, L: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I, J, K, L)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate, J: Expression + NonAggregate, K: Expression + NonAggregate, L: Expression + NonAggregate, M: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I, J, K, L, M)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate, J: Expression + NonAggregate, K: Expression + NonAggregate, L: Expression + NonAggregate, M: Expression + NonAggregate, N: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I, J, K, L, M, N)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate, J: Expression + NonAggregate, K: Expression + NonAggregate, L: Expression + NonAggregate, M: Expression + NonAggregate, N: Expression + NonAggregate, O: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I, J, K, L, M, N, O)
• impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate, F: Expression + NonAggregate, G: Expression + NonAggregate, H: Expression + NonAggregate, I: Expression + NonAggregate, J: Expression + NonAggregate, K: Expression + NonAggregate, L: Expression + NonAggregate, M: Expression + NonAggregate, N: Expression + NonAggregate, O: Expression + NonAggregate, P: Expression + NonAggregate> Expression for (A, B, C, D, E, F, G, H, I, J, K, L, M, N, O, P)