Tableau 表的连接
几种连接方式
The 4 different ways to fuse are (TP shows them with visulisations – Venn diagram!):
•Inner, only fuse the rows (with the specified property) where the same value exists in both the left
data and right data, drop the rows where the value only exists in one side.
•Left, fuse the rows (with the specified property) that exist in the left data, and drop the row if
it is in the right data but not in the left data.
•Right, fuse the rows (with the specified property) that exist in the right data, and drop the rows
if it is in the left data but not in the right data.
•Full order, fuse the rows (with the specified property) that exist in either side.
备注
两个直接拖过去是连接relation，保留了两个表的内容；
双击一个表，然后再拖过去另一个表，那就是join
