Struct diesel::sql_types::Untyped

source ·
pub struct Untyped;
Expand description

Query nodes with this expression type do not have a statically at compile time known expression type.

An example for such a query node in diesel itself, is sql_query as we do not know which fields are returned from such a query at compile time.

For loading values from queries returning a type of this expression, consider using #[derive(QueryableByName)] on the corresponding result type.

Trait Implementations§

Returns a copy of the value. Read more
Performs copy-assignment from source. Read more
Available on crate feature i-implement-a-third-party-backend-and-opt-into-breaking-changes only.
Formats the value using the given formatter. Read more
See the trait documentation.

Auto Trait Implementations§

Blanket Implementations§

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Convert self to an expression for Diesel’s query builder. Read more
Convert &self to an expression for Diesel’s query builder. Read more
The exact return value of this function is considerded to be a backend specific implementation detail. You should not rely on those values if you not own the corresponding backend Read more
The resulting type after obtaining ownership.
Creates owned data from borrowed data, usually by cloning. Read more
Uses borrowed data to replace owned data, usually by cloning. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.