Opaleye.Internal.Order

Documentation

data SingleOrder a

Constructors

SingleOrder OrderOp (a -> PrimExpr)

Instances

Contravariant SingleOrder

newtype Order a

An Order represents an expression to order on and a sort direction. Multiple Orders can be composed with mappend. If two rows are equal according to the first Order, the second is used, and so on.

Constructors

Order [SingleOrder a]

Instances

Contravariant Order

Monoid (Order a)

order :: OrderOp -> (a -> Column b) -> Order a

orderByU :: Order a -> (a, PrimQuery, Tag) -> (a, PrimQuery, Tag)

limit' :: Int -> (a, PrimQuery, Tag) -> (a, PrimQuery, Tag)

offset' :: Int -> (a, PrimQuery, Tag) -> (a, PrimQuery, Tag)