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

The type that this expression represents in SQL

Implementations on Foreign Types

impl<T: Expression + ?Sized> Expression for Box<T>

type SqlType = T::SqlType

impl<'a, T: Expression + ?Sized> Expression for &'a T

type SqlType = T::SqlType

impl<A: Expression + NonAggregate> Expression for (A,)

type SqlType = (<A as Expression>::SqlType,)

impl<A: Expression + NonAggregate, B: Expression + NonAggregate> Expression for (A, B)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType)

impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate> Expression for (A, B, C)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType)

impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate> Expression for (A, B, C, D)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType)

impl<A: Expression + NonAggregate, B: Expression + NonAggregate, C: Expression + NonAggregate, D: Expression + NonAggregate, E: Expression + NonAggregate> Expression for (A, B, C, D, E)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType, <J as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType, <J as Expression>::SqlType, <K as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType, <J as Expression>::SqlType, <K as Expression>::SqlType, <L as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType, <J as Expression>::SqlType, <K as Expression>::SqlType, <L as Expression>::SqlType, <M as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType, <J as Expression>::SqlType, <K as Expression>::SqlType, <L as Expression>::SqlType, <M as Expression>::SqlType, <N as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType, <J as Expression>::SqlType, <K as Expression>::SqlType, <L as Expression>::SqlType, <M as Expression>::SqlType, <N as Expression>::SqlType, <O as Expression>::SqlType)

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)

type SqlType = (<A as Expression>::SqlType, <B as Expression>::SqlType, <C as Expression>::SqlType, <D as Expression>::SqlType, <E as Expression>::SqlType, <F as Expression>::SqlType, <G as Expression>::SqlType, <H as Expression>::SqlType, <I as Expression>::SqlType, <J as Expression>::SqlType, <K as Expression>::SqlType, <L as Expression>::SqlType, <M as Expression>::SqlType, <N as Expression>::SqlType, <O as Expression>::SqlType, <P as Expression>::SqlType)

Implementors

• impl Expression for now type SqlType = Timestamp;
• impl<ST, T> Expression for SqlLiteral<ST, T> type SqlType = ST;
• impl<Query, Value> Expression for UncheckedBind<Query, Value> where
    Query: Expression,  type SqlType = Query::SqlType;