August 2022
Beginner to intermediate
463 pages
9h 22m
Chinese
Content preview from Tableau Prep即学即用
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204
｜
第
22
章
第
16
章详细介绍了数据连接操作。
22.3
创建附加行
本节将介绍在数据集中创建附加行的多种技术。
22.3.1
将列转为行
就像
Rows to Columns
（行到列）转换功能一样，
Columns to Rows
（列到行）转换
可以创建多条对分析有用的附加行数据（见图
22-6
）。列到行的转换通常用于将一
列多个
Date
（日期）字段转化为两列：一列用于日期数据字段，一列用于对应的值。
这种类型的转换创建了更多的行，但它使分析变得更容易，因为当日期字段在单独
的一列中时，
Tableau
提供了很多灵活性和功能。
图
22
-
6
：设置列到行转换的字段窗格
22.3.2
数据集联合
数据联合操作（见图
22-7
）经常被用来将结构非常相似的数据集叠加在一起。这样
每用到一个额外的数据集就会增加新的行。联合经常用于将不同周或月的数据集添
加在一起，以创建一个单一的数据文件，从而使分析过程更加便捷。
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