Trait diesel::expression::SelectableExpression

pub trait SelectableExpression<QS: ?Sized>: AppearsOnTable<QS> { }

Indicates that an expression can be selected from a source.

Columns will implement this for their table. Certain special types, like CountStar and Bound will implement this for all sources. Most compound expressions will implement this if each of their parts implement it.

Notably, columns will not implement this trait for the right side of a left join. To select a column or expression using a column from the right side of a left join, you must call .nullable() on it.

Implementations on Foreign Types

impl<T, QS> SelectableExpression<QS> for Box<T>where
    T: SelectableExpression<QS> + ?Sized,
    Box<T>: AppearsOnTable<QS>,

impl<'a, T, QS> SelectableExpression<QS> for &'a Twhere
    T: SelectableExpression<QS> + ?Sized,
    &'a T: AppearsOnTable<QS>,

impl<T0, QS> SelectableExpression<QS> for (T0,)where
    T0: SelectableExpression<QS>,
    (T0,): AppearsOnTable<QS>,

impl<T0, T1, QS> SelectableExpression<QS> for (T0, T1)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    (T0, T1): AppearsOnTable<QS>,

impl<T0, T1, T2, QS> SelectableExpression<QS> for (T0, T1, T2)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    (T0, T1, T2): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, QS> SelectableExpression<QS> for (T0, T1, T2, T3)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    (T0, T1, T2, T3): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    T25: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    T25: SelectableExpression<QS>,
    T26: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    T25: SelectableExpression<QS>,
    T26: SelectableExpression<QS>,
    T27: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    T25: SelectableExpression<QS>,
    T26: SelectableExpression<QS>,
    T27: SelectableExpression<QS>,
    T28: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    T25: SelectableExpression<QS>,
    T26: SelectableExpression<QS>,
    T27: SelectableExpression<QS>,
    T28: SelectableExpression<QS>,
    T29: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    T25: SelectableExpression<QS>,
    T26: SelectableExpression<QS>,
    T27: SelectableExpression<QS>,
    T28: SelectableExpression<QS>,
    T29: SelectableExpression<QS>,
    T30: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30): AppearsOnTable<QS>,

impl<T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30, T31, QS> SelectableExpression<QS> for (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30, T31)where
    T0: SelectableExpression<QS>,
    T1: SelectableExpression<QS>,
    T2: SelectableExpression<QS>,
    T3: SelectableExpression<QS>,
    T4: SelectableExpression<QS>,
    T5: SelectableExpression<QS>,
    T6: SelectableExpression<QS>,
    T7: SelectableExpression<QS>,
    T8: SelectableExpression<QS>,
    T9: SelectableExpression<QS>,
    T10: SelectableExpression<QS>,
    T11: SelectableExpression<QS>,
    T12: SelectableExpression<QS>,
    T13: SelectableExpression<QS>,
    T14: SelectableExpression<QS>,
    T15: SelectableExpression<QS>,
    T16: SelectableExpression<QS>,
    T17: SelectableExpression<QS>,
    T18: SelectableExpression<QS>,
    T19: SelectableExpression<QS>,
    T20: SelectableExpression<QS>,
    T21: SelectableExpression<QS>,
    T22: SelectableExpression<QS>,
    T23: SelectableExpression<QS>,
    T24: SelectableExpression<QS>,
    T25: SelectableExpression<QS>,
    T26: SelectableExpression<QS>,
    T27: SelectableExpression<QS>,
    T28: SelectableExpression<QS>,
    T29: SelectableExpression<QS>,
    T30: SelectableExpression<QS>,
    T31: SelectableExpression<QS>,
    (T0, T1, T2, T3, T4, T5, T6, T7, T8, T9, T10, T11, T12, T13, T14, T15, T16, T17, T18, T19, T20, T21, T22, T23, T24, T25, T26, T27, T28, T29, T30, T31): AppearsOnTable<QS>,

Implementors

impl<QS> SelectableExpression<QS> for nowwhere
    now: AppearsOnTable<QS>,

impl<QS> SelectableExpression<QS> for todaywhere
    today: AppearsOnTable<QS>,

impl<QS, Query, Value> SelectableExpression<QS> for UncheckedBind<Query, Value>where
    Self: AppearsOnTable<QS>,

impl<QS, ST, T> SelectableExpression<QS> for SqlLiteral<ST, T>where
    Self: Expression,

impl<S, C> SelectableExpression<Alias<S>> for AliasedField<S, C>where
    S: AliasSource,
    C: Column<Table = S::Target>,
    Self: AppearsOnTable<Alias<S>>,