Opaleye.Internal.Distinct

Documentation

distinctExplicit :: Distinctspec columns columns' -> Query columns -> Query columns'

newtype Distinctspec a b

Constructors

Distinctspec (Aggregator a b)

Instances

Profunctor Distinctspec

Methods

dimap :: (a -> b) -> (c -> d) -> Distinctspec b c -> Distinctspec a d

lmap :: (a -> b) -> Distinctspec b c -> Distinctspec a c

rmap :: (b -> c) -> Distinctspec a b -> Distinctspec a c

(#.) :: Coercible * c b => (b -> c) -> Distinctspec a b -> Distinctspec a c

(.#) :: Coercible * b a => Distinctspec b c -> (a -> b) -> Distinctspec a c

ProductProfunctor Distinctspec

Methods

empty :: Distinctspec () ()

(***!) :: Distinctspec a b -> Distinctspec a' b' -> Distinctspec (a, a') (b, b')

SumProfunctor Distinctspec

Methods

(+++!) :: Distinctspec a b -> Distinctspec a' b' -> Distinctspec (Either a a') (Either b b')

Default Distinctspec (Column a) (Column a)

Methods

def :: Distinctspec (Column a) (Column a)

Functor (Distinctspec a)

Methods

fmap :: (a -> b) -> Distinctspec a a -> Distinctspec a b

(<$) :: a -> Distinctspec a b -> Distinctspec a a

Applicative (Distinctspec a)

Methods

pure :: a -> Distinctspec a a

(<*>) :: Distinctspec a (a -> b) -> Distinctspec a a -> Distinctspec a b

(*>) :: Distinctspec a a -> Distinctspec a b -> Distinctspec a b

(<*) :: Distinctspec a a -> Distinctspec a b -> Distinctspec a a