relational-query-0.8.3.2: Typeful, Modular, Relational, algebraic query engine

Copyright2013 Kei Hibino
LicenseBSD3
Maintainer[email protected]
Stabilityexperimental
Portabilityunknown
Safe HaskellNone
LanguageHaskell2010

Database.Relational.Query.Table

Contents

Description

This module defines table type which has table metadatas.

Synopsis

Untyped table type

data Untyped Source

Untyped typed table type

Instances

name' :: Untyped -> String Source

Name string of table in SQL

width' :: Untyped -> Int Source

Width of table

columns' :: Untyped -> [ColumnSQL] Source

Column name strings in SQL

(!) Source

Arguments

:: Untyped 
-> Int

Column index

-> ColumnSQL

Column name String in SQL

Column name string in SQL specified by index

Phantom typed table type

data Table r Source

Phantom typed table type

unType :: Table t -> Untyped Source

Untype table.

name :: Table r -> String Source

Name string of table in SQL

shortName :: Table r -> String Source

Not qualified name string of table in SQL

width :: Table r -> Int Source

Width of table

columns :: Table r -> [ColumnSQL] Source

Column name strings in SQL

index Source

Arguments

:: Table r 
-> Int

Column index

-> ColumnSQL

Column name String in SQL

Column name string in SQL specified by index

table :: String -> [String] -> Table r Source

Unsafely generate phantom typed table type.

toMaybe :: Table r -> Table (Maybe r) Source

Cast phantom type into Maybe type.

Table existence inference

class PersistableWidth r => TableDerivable r where Source

Inference rule of Table existence.

Methods

derivedTable :: Table r Source