pub trait AsQuery {
    type SqlType;
    type Query: Query<SqlType = Self::SqlType>;

    // Required method
    fn as_query(self) -> Self::Query;
}
Expand description

Types that can be converted into a complete, typed SQL query.

This is used internally to automatically add the right select clause when none is specified, or to automatically add RETURNING * in certain contexts.

A type which implements this trait is guaranteed to be valid for execution.

Required Associated Types§

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type SqlType

The SQL type of Self::Query

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type Query: Query<SqlType = Self::SqlType>

What kind of query does this type represent?

Required Methods§

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fn as_query(self) -> Self::Query

Converts a type which semantically represents a SQL query into the actual query being executed. See the trait level docs for more.

Implementors§

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impl<S> AsQuery for Alias<S>

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impl<S> AsQuery for Only<S>

Available on crate feature postgres_backend only.
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impl<T, U> AsQuery for DeleteStatement<T, U, NoReturningClause>

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impl<T, U, Op> AsQuery for InsertStatement<T, U, Op, NoReturningClause>

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impl<T, U, V> AsQuery for UpdateStatement<T, U, V, NoReturningClause>

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impl<T: Query> AsQuery for T

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type SqlType = <T as Query>::SqlType

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type Query = T