Hoogle Search

Within LTS Haskell 24.52 (ghc-9.10.3)

Note that Stackage only displays results for the latest LTS and Nightly snapshot. Learn more.

Exact lookup

1. class (Eq a, Ord a, Enum a, Bounded a, PGRep a) => PGEnum a

   postgresql-typed	Database.PostgreSQL.Typed.Enum

   A type based on a PostgreSQL enum. Automatically instantiated by dataPGEnum.

2. dataPGEnum :: String -> PGName -> (String -> String) -> DecsQ

   postgresql-typed	Database.PostgreSQL.Typed.Enum

   Create a new enum type corresponding to the given PostgreSQL enum type. For example, if you have CREATE TYPE foo AS ENUM ('abc', 'DEF'), then dataPGEnum "Foo" "foo" ("Foo_"++) will be equivalent to:

   data Foo = Foo_abc | Foo_DEF deriving (Eq, Ord, Enum, Bounded, Typeable)
   instance PGType "foo" where PGVal "foo" = Foo
   instance PGParameter "foo" Foo where ...
   instance PGColumn "foo" Foo where ...
   instance PGRep Foo where PGRepType = "foo"
   instance PGEnum Foo where pgEnumValues = [(Foo_abc, "abc"), (Foo_DEF, "DEF")]
   

   Requires language extensions: TemplateHaskell, FlexibleInstances, MultiParamTypeClasses, DeriveDataTypeable, DataKinds, TypeFamilies

3. pgEnumName :: PGEnum a => a -> PGName

   postgresql-typed	Database.PostgreSQL.Typed.Enum

   The database name of a value.

4. pgEnumValue :: PGEnum a => PGName -> Maybe a

   postgresql-typed	Database.PostgreSQL.Typed.Enum

   Lookup a value matching the given database name.

5. pgEnumValues :: PGEnum a => [(a, PGName)]

   postgresql-typed	Database.PostgreSQL.Typed.Enum

   List of all the values in the enum along with their database names.

6. fdw_invalid_column_number :: ByteString

   postgresql-typed	Database.PostgreSQL.Typed.ErrCodes

   FDW_INVALID_COLUMN_NUMBER: HV008 (Error)

7. non_numeric_sql_json_item :: ByteString

   postgresql-typed	Database.PostgreSQL.Typed.ErrCodes

   NON_NUMERIC_SQL_JSON_ITEM: 22036 (Error)

8. sql_json_number_not_found :: ByteString

   postgresql-typed	Database.PostgreSQL.Typed.ErrCodes

   SQL_JSON_NUMBER_NOT_FOUND: 2203B (Error)

9. unsafe_new_enum_value_usage :: ByteString

   postgresql-typed	Database.PostgreSQL.Typed.ErrCodes

   UNSAFE_NEW_ENUM_VALUE_USAGE: 55P04 (Error)

10. pgColNumber :: PGColDescription -> !Int16

    postgresql-typed	Database.PostgreSQL.Typed.Protocol

    No documentation available.

Page 511 of many | Previous | Next