November 2017
Intermediate to advanced
328 pages
6h 51m
Japanese
Content preview from 入門 PySpark ―PythonとJupyterで活用するSpark 2エコシステム
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178
9
章
Blaze
によるポリグロットパーシステンス
からの接続
●
データのクエリ、結合、ソート、変換のやり方と単純な要約統計処理
9.1
Blaze
の イ ン スト ー ル
Anacondaを使っているなら、Blazeのインストールは簡単です。次のコマンドを CLIで実行してくだ
さい（CLI が 何 か を 知 ら な い 場 合 は 、「 付 録 A Sparkのインストール」を参照してください）。
conda install blaze
コマンドを実行すると、画面は次のようになります。
後ほど Blazeから PostgreSQLやMongoDBに接続するので、Blazeがバックグラウンドで使うパッ
ケージを追加します。
ここでは SQL AlchemyとPyMongo をインストールします。どちらも Anacondaにあります。
conda install sqlalchemy
conda install pymongo
あとは、ノートブックに Blaze そのものをインポートするだけです。
import blaze as bl
9.2
ポリグロットパーシステンス
2006 年にNeal Ford は、ポリグロットパーシステンスに少し似ているポリグロットプログラミングと
いう概念を提唱しました。彼は、1つで何もかもまかなえるようなソリューションは存在しないことを示
し、特定の問題に適した複数のプログラミング言語を使うことを提唱したのです。
データの世界においても同様に、競争力を保ち続けよう
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.