https://github.com/lorenzo/mysql-haskell-nem

A simpler query interface for mysql-haskell
https://github.com/lorenzo/mysql-haskell-nem

haskell mysql mysql-haskell

Last synced: 12 days ago
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A simpler query interface for mysql-haskell

• Host: GitHub
• URL: https://github.com/lorenzo/mysql-haskell-nem
• Owner: lorenzo
• License: other
• Created: 2016-12-18T16:06:18.000Z (almost 8 years ago)
• Default Branch: master
• Last Pushed: 2017-08-24T09:54:13.000Z (about 7 years ago)
• Last Synced: 2024-10-11T06:33:25.269Z (29 days ago)
• Topics: haskell, mysql, mysql-haskell
• Language: Haskell
• Homepage: https://hackage.haskell.org/package/mysql-haskell-nem
• Size: 7.81 KB
• Stars: 3
• Watchers: 5
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: Readme.md
  • License: LICENSE

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README

        
mysql-haskell-nem

=================

Provides a simpler interface for retrieving results when using the [mysql-haskell](http://hackage.haskell.org/package/mysql-haskell) package.

Guide

-----

The `Database.MySQL.Base` and `Database.MySQL.Nem` modules provides everything you need to start making queries:

```haskell

{-# LANGUAGE OverloadedStrings #-}

module Main where

import Database.MySQL.Base

import Database.MySQL.Base.Nem

import Data.Text (unpack)

import qualified System.IO.Streams as Streams

main :: IO () 

main = do

    conn <- connect

        defaultConnectInfo {ciUser = "username", ciPassword = "password", ciDatabase = "dbname"}

	results <- queryResults conn "SELECT email, name FROM users" >>=

	_ <-

		Streams.mapM_

			(\(email, name) -> print $ (Text.unpack email) ++ ":" ++ (name :: String) ) results >>=

		Streams.toList

```

It's recommended to use prepared statement to improve query speed:

```haskell

    ...

    s <- prepareStmt conn "SELECT * FROM some_table where person_age > ?"

    ...

    results <- queryStmtResutls s [MySQLInt32U 18]

    ...

```