Trait diesel::query_builder::SelectClauseExpression[][src]

pub trait SelectClauseExpression<QS> {
    type Selection: SelectableExpression<QS>;
    type SelectClauseSqlType;

Specialised variant of Expression for select clause types

The difference to the normal Expression trait is the query source (QS) generic type parameter. This allows to access the query source in generic code.

Associated Types

type Selection: SelectableExpression<QS>[src]

The expression represented by the given select clause

type SelectClauseSqlType[src]

SQL type of the select clause

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