| Safe Haskell | None |
|---|---|
| Language | Haskell2010 |
Opaleye.Values
Synopsis
- values :: (Default Valuesspec fields fields, Default Unpackspec fields fields) => [fields] -> Select fields
- valuesExplicit :: Unpackspec fields fields' -> Valuesspec fields fields' -> [fields] -> Select fields'
Documentation
values :: (Default Valuesspec fields fields, Default Unpackspec fields fields) => [fields] -> Select fields Source #
values implements Postgres's VALUES construct and allows you
to create a query that consists of the given rows.
Example type specialization:
values :: [(Field a, Field b)] -> Select (Field a, Field b)
Assuming the makeAdaptorAndInstance splice has been run for the
product type Foo:
selectTable :: [Foo (Field a) (Field b) (Field c)] -> S.Select (Foo (Field a) (Field b) (Field c))
valuesExplicit :: Unpackspec fields fields' -> Valuesspec fields fields' -> [fields] -> Select fields' Source #