Database.PostgreSQL.Simple.Bind.Common

Common functions and types.

Documentation

unwrapRow :: [Only a] -> a

Remove list and Only constructors.

unwrapColumn :: [Only a] -> [a]

Remove Only constructor.

data PostgresBindOptions

Options that specify how to construct the function binding.

Constructors

PostgresBindOptions

Fields

• pboFunctionName :: PGFunction -> String

  Function that generates name of a binding.

• pboIsNullable :: String -> String -> Bool

  Which columns in returned tables can be null.

• pboSetOfReturnType :: String -> ReturnType

  How to process type in "setof" clause.

• pboExplicitCasts :: Bool

  Whether to add explicit type casts to arguments.

• pboOlderCallSyntax :: Bool

  Whether to use old-style call syntax (:=) instead of (=>). This is necessary for PostgreSQL < 9.5.

• pboDebugQueries :: Bool

  Whether to print executed queries and their arguments.

Instances

Default PostgresBindOptions

Methods

def :: PostgresBindOptions

data ReturnType

How to interpret results of function execution.

Constructors

AsRow

AsField