Struct diesel::expression::is_aggregate::Never[][src]

pub struct Never;
Expand description

This expression is never aggregate, and can appear with any other expression, regardless of whether it is aggregate.

Examples of this are literals. 1 does not care about aggregation. foo + 1 is always valid, regardless of whether foo appears in the group by clause or not.

Trait Implementations

What is the resulting IsAggregate type?

What is the resulting IsAggregate type?

What is the resulting IsAggregate type?

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

Performs the conversion.

Performs the conversion.

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 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.