August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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｜
225
拆分数据字段
25.1
基本分割
在大多数数据工具中拆分数据非常简单，
Prep Builder
也不例外。只需选择要拆分的
数据字段，点击字段右上方的省略号（…），选择
Split Values
（拆分值）菜单，然
后点击
Automatic Splic
（自动拆分）。
Prep Builder
将使用它认为最合适的逻辑来拆
分字段（见图
25-2
）。
图
25
-
2
：从数据字段菜单中选择 Automatic Splic（自动拆分）
在这个例子中，自动拆分已按预期完成（见图
25-3
）。
图
25
-
3
：图
25
-
2
的自动拆分结果
226
｜
第
25
章
为了执行这个任务，
Prep Builder
实际上写了三个
Calculated Field
（计算字段），如
果你想要一个稍微不同的结果，可以随时编辑它们（见图
25-4
）。
图
25
-
4
：在 Change（更改）窗格中，由自动拆分产生的计算公式
可以在
Prep Builder
的
Change
（更改）窗格中找到这些计算结果。也可以从这里编
辑它们，或者了解
Prep
是如何完成所设置的任务的（见图
25-5
）。
图
25
-
5
：在 Calculation Editor（计算编辑器）中打开其中一个拆分的计算公式
这个公式是将
Product Code
（产品代码）字段拆分在连字符（
-
）上，并取回第三部分 ...
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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.