opaleye-0.2: An SQL-generating DSL targeting PostgreSQL

Safe HaskellSafe-Inferred
LanguageHaskell98

Opaleye.Join

Documentation

leftJoin :: (Default Unpackspec columnsA columnsA, Default Unpackspec columnsB columnsB, Default NullMaker columnsB nullableColumnsB) => Query columnsA -> Query columnsB -> ((columnsA, columnsB) -> Column Bool) -> Query (columnsA, nullableColumnsB) Source

leftJoinExplicit :: Unpackspec columnsA columnsA -> Unpackspec columnsB columnsB -> NullMaker columnsB nullableColumnsB -> Query columnsA -> Query columnsB -> ((columnsA, columnsB) -> Column Bool) -> Query (columnsA, nullableColumnsB) Source