Trait diesel::query_builder::SelectClauseExpression
source · pub trait SelectClauseExpression<QS> {
type Selection;
type SelectClauseSqlType;
}
Expand description
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.
Required Associated Types§
sourcetype SelectClauseSqlType
type SelectClauseSqlType
SQL type of the select clause