Moduleopaleye-0.10.8.0Haskell2010

Opaleye.Internal.Join

newtypenewtype NullMaker a b

Instances6Profunctor, ProductProfunctor, Default, Functor, Applicative

Profunctor NullMakerDefined in opaleye-0.10.8.0 · Opaleye.Internal.Join
ProductProfunctor NullMakerDefined in opaleye-0.10.8.0 · Opaleye.Internal.Join
Default NullMaker (Field a) (FieldNullable a)Defined in opaleye-0.10.8.0 · Opaleye.Internal.Join
Default NullMaker (FieldNullable a) (FieldNullable a)Defined in opaleye-0.10.8.0 · Opaleye.Internal.Join
Functor (NullMaker a)Defined in opaleye-0.10.8.0 · Opaleye.Internal.Join
Applicative (NullMaker a)Defined in opaleye-0.10.8.0 · Opaleye.Internal.Join

valuetoNullable :: NullMaker a b -> a -> b

valuejoinExplicit

valueleftJoinAExplicit

valueoptionalRestrict

valueoptionalRestrictExplicit

valueleftJoinInTermsOfOptionalRestrict

An example to demonstrate how the functionality of LEFT JOIN can be recovered using optionalRestrict.

valueextractLeftJoinFields