opaleye-0.4.2.0: An SQL-generating DSL targeting PostgreSQL

Safe HaskellNone
LanguageHaskell98

Opaleye.Internal.Join

Documentation

newtype NullMaker a b Source

Constructors

NullMaker (a -> b) 

Instances

toNullable :: NullMaker a b -> a -> b Source

extractLeftJoinFields :: Int -> Tag -> PrimExpr -> PM [(Symbol, PrimExpr)] PrimExpr Source