opaleye-0.2: An SQL-generating DSL targeting PostgreSQL

Safe Haskell	Safe-Inferred
Language	Haskell98

Opaleye.Operators

Synopsis

Documentation

restrict :: QueryArr (Column Bool) () Source

Restrict query results to a particular condition. Corresponds to the guard method of the MonadPlus class.

doubleOfInt :: Column Int -> Column Double Source

(.<) :: Column a -> Column a -> Column Bool Source

(.<=) :: Column a -> Column a -> Column Bool Source

(.>=) :: Column a -> Column a -> Column Bool Source

(.&&) :: Column Bool -> Column Bool -> Column Bool Source

(.||) :: Column Bool -> Column Bool -> Column Bool Source

not :: Column Bool -> Column Bool Source

(.++) :: Column String -> Column String -> Column String Source

(./=) :: Column a -> Column a -> Column Bool Source

(.==) :: Column a -> Column a -> Column Bool Source

(.>) :: Column a -> Column a -> Column Bool Source

case_ :: [(Column Bool, Column a)] -> Column a -> Column a Source

ifThenElse :: Column Bool -> Column a -> Column a -> Column a Source