August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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432
｜
第
49
章
图
49
-
7
：桌面中的数据透视产生的数据字段名
何时将单个转换移至
Tableau Prep
中
在
Tableau Desktop
中进行转换操作的限制是，你只能转换一次。此外，你不能同时
拆分和转换，也不能在转换中使用计算字段。许多数据集，特别是那些讨厌的概览
数据，比适于简单转换的数据要复杂得多。因此，在规划你的数据准备工作时，如
果需要多个转换，那么直接转到
Prep Builder
中进行。
49.3
何时使用
Prep Builder
你已经看到，即使在
Tableau Desktop
中开始可能是有意义的，但根据你正在处理的
数据，切换到
Tableau Prep
通常是一个好主意。然而，在数据审查或交接的情况下，
你总是希望直接前往
Prep
。
Tableau Prep
允许大量的数据可追溯特性。换句话说，它在很大程度上是自我记录的，
因为你建立了数据准备流程。
Tableau Desktop
不具备这样的能力。在
Prep Builder
中，
使用图标、更改窗格以及逐一进行更改的能力，让任何人都可以追溯从输入到输出
的历程，并了解每个阶段存在的原因。
Prep
能够用逻辑名称重命名步骤，并添加描
述（见图
49-8
），比起多年来我们许多人因为
Tableau Desktop
缺乏这种文档记录功
能而不得不翻译的冗长的项目交接
Word
文档，在
Prep
里工作要容易理解得多。
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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.