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1. fromMaybeFields :: Default IfPP b b => b -> MaybeFields b -> b

   opaleye	Opaleye.Internal.MaybeFields

   The Opaleye analogue of fromMaybe

2. fromMaybeFieldsExplicit :: IfPP b b -> b -> MaybeFields b -> b

   opaleye	Opaleye.Internal.MaybeFields

   No documentation available.

3. ifPPMaybeFields :: IfPP a b -> IfPP (MaybeFields a) (MaybeFields b)

   opaleye	Opaleye.Internal.MaybeFields

   No documentation available.

4. mapMaybeFieldsWithNulls :: ProductProfunctor p => p (Field SqlBool) (Field SqlBool) -> WithNulls p a b -> WithNulls p (MaybeFields a) (MaybeFields b)

   opaleye	Opaleye.Internal.MaybeFields

   This is only safe if b is OK with having nulls passed through it when they claim to be non-null.

5. matchMaybe :: Default IfPP b b => MaybeFields a -> (Maybe a -> b) -> b

   opaleye	Opaleye.Internal.MaybeFields

   Use a Haskell \case expression to pattern match on a MaybeFields.

   example :: MaybeFields (Field SqlInt4) -> Field SqlInt4
   example mf = matchMaybe mf $ \case
   Nothing -> 0
   Just x  -> x * 100
   

6. nullableToMaybeFields :: FieldNullable a -> MaybeFields (Field a)

   opaleye	Opaleye.Internal.MaybeFields

   Convert NULL to nothingFields and non-NULL to a justFields

7. nullspecMaybeFields :: Nullspec a b -> Nullspec (MaybeFields a) (MaybeFields b)

   opaleye	Opaleye.Internal.MaybeFields

   No documentation available.

8. productProfunctorMaybeFields :: ProductProfunctor p => p (Field SqlBool) (Field SqlBool) -> p a b -> p (MaybeFields a) (MaybeFields b)

   opaleye	Opaleye.Internal.MaybeFields

   This is not safe in general because it relies on p not doing anything observable with the as if mfPresent is false. In particular, it won't work for Distinctspec because it does indeed look at the mfFields to check distinctness.

9. toFieldsMaybeFields :: Nullspec a b -> ToFields a b -> ToFields (Maybe a) (MaybeFields b)

   opaleye	Opaleye.Internal.MaybeFields

   No documentation available.

10. traverseMaybeFields :: SelectArr a b -> SelectArr (MaybeFields a) (MaybeFields b)

    opaleye	Opaleye.Internal.MaybeFields

    No documentation available.

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