Trait diesel::SelectDsl [−] [src]

pub trait SelectDsl<Selection: Expression, Type: NativeSqlType = Selection::SqlType> {
    type Output: Query<SqlType=Type>;
    fn select(self, selection: Selection) -> Self::Output;
}

Sets the select clause of a query. If there was already a select clause, it will be overridden. The expression passed to select must actually be valid for the query (only contains columns from the target table, doesn't mix aggregate + non-aggregate expressions, etc).

Associated Types

`type Output: Query<SqlType=Type>`

Required Methods

`fn select(self, selection: Selection) -> Self::Output`

Implementors

impl<T, Selection, Type> SelectDsl<Selection, Type> for T where Selection: Expression, Type: NativeSqlType, T: QuerySource + AsQuery, T::Query: SelectDsl<Selection, Type>