August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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为何需要自助式数据准备
｜
11
现在，数据分析周期的“缺口”，在于这些数据来源与数据可视化分析准备之间。
这项工作的复杂性各不相同（就像生活中的任何技能一样），从打开
Excel
电子表
格到运行应用程序接口（
API
）查询都有可能。操作使用
Excel
或编写程序代码来进
行数据准备，其面临的挑战是截然不同的，但它们也让人关注到，为什么需要另一
种解决方案。
Excel
非常灵活，也是很多人熟悉的工具，但它很难实现自动化。因此，
当数据更新时，往往需要大量的人工重复操作。
Excel
的非可视化特性，也使得它
更容易在不经意间引入错误。而对于编写程序代码来说，不得不进行手动更新并不
是很大的问题，因为编码通常是建立在按一个按钮就可以重新运行代码的基础上的。
然而，在大多数工作场所，懂编码的人比懂
Excel
的人要少，因此很难将这项工作
交给同事来做。而且，就像在
Excel
中一样，很容易犯错而不被发现，因为直到数
据转换结束你才会看到最终数据。所以，虽然个人对能够完成数据准备任务有很大
的需求，但长期以来，这种需求和提供帮助以实现这种需求的工具所具备的能力之
间一直存在差距。
1.3
自助式数据准备的机会
这种差距问题正在由新的工具来解决，这些工具使得业务专家能够使用自助式可视
化分析来访问数据并回答他们的问题。
Tableau Prep Builder
通过将数据可视化分析
的相同实现逻辑带入数据准备过程，使数据准备过程比其他工具更容易。通过使用
与数据可视化人员已经习惯的用户界面（见图
1-1
）类似的用户界面，
Prep Builder ...
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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.