Represents a RETURNING statement for a manipulation query.
Constructors
Count :: Returning fields Int64ReturningExplicit :: FromFields b c -> (a -> b) -> Returning fields [c]
Moduleopaleye-0.10.8.0Haskell2010
Opaleye.Internal.Manipulation
- 2 types
- 15 values
- Packageopaleye-0.10.8.0
- Exports17
- LanguageHaskell2010
- LicenceBSD-3-Clause
- SourceManipulation.hs
Constructors
Updater (a -> b)
Instances7Profunctor, ProductProfunctor, Default, Functor, Applicative, …
Profunctor UpdaterDefined in opaleye-0.10.8.0 · Opaleye.Internal.ManipulationProductProfunctor UpdaterDefined in opaleye-0.10.8.0 · Opaleye.Internal.ManipulationDefault Updater (Field_ n a) ()Defined in opaleye-0.10.8.0 · Opaleye.Internal.ManipulationDefault Updater (Field_ n a) (Maybe (Field_ n a))Defined in opaleye-0.10.8.0 · Opaleye.Internal.ManipulationDefault Updater (Field_ n a) (Field_ n a)Defined in opaleye-0.10.8.0 · Opaleye.Internal.ManipulationFunctor (Updater a)Defined in opaleye-0.10.8.0 · Opaleye.Internal.ManipulationApplicative (Updater a)Defined in opaleye-0.10.8.0 · Opaleye.Internal.Manipulation
value
runDeleteReturning :: Default FromFields columnsReturned haskells=> Connection-> Table a columnsRTable to delete rows from
-> (columnsR -> Field SqlBool)Predicate function
fto choose which rows to delete. runDeleteReturning will delete rows for whichfreturnsTRUEand leave unchanged rows for whichfreturnsFALSE.-> (columnsR -> columnsReturned)-> IO [haskells]Returned rows which have been deleted